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US MidAtlantic : Pennsylvania - Selective Company List

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Companies in other MidAtlantic states are on separate pages  (New Jersey, Maryland, Virginia, Delaware, Washington DC, West Virginia, North Carolina)
Headquarters or major subunits located in the state, including foreign-owned subunits.
Company HQ/Sub Website Location
Pennsylvania      <bottom>   maps of PA, NJ, MD, DC, VA, NC, WV Area Representative City State Postal
Allegheny Ludlum Corp. Public subunit   Brackenridge PA 15014-1597
Universal Stainless & Alloy Products, Inc. Public   Bridgeville PA 15017-2705
Tollgrade Communications, Inc. Public   Cheswick PA 15024-1010
Millennia Group (The) Private   Cheswick PA 15024-1330
Tube City, Inc. Private   Glassport PA 15045-1397
Medrad, Inc. US subsidiary Germany Indianola PA 15051-9759
Black Box Corporation Public   Lawrence PA 15055-1018
Hussey Copper, Ltd Private   Leetsdale PA 15056-1000
Nova Chemicals Corp. US subsidiary Canada Monaca PA 15061-2212
Tuscarora Inc. US subsidiary Sweden New Brighton PA 15066-1922
Industrial Scientific Corp. Private   Oakdale PA 15071-1500
Marconi Communications US subsidiary UK - England Warrendale PA 15086
Microbac Laboratories, Inc. Private   Wexford PA 15090
Union Electric Steel Corp. Public subunit   Carnegie PA 15106-1137
USFilter Engineering & Construction US subsidiary France Moon Township PA 15108
TechRx, Inc. Private   Coraopolis PA 15108
Baker Environmental, Inc. Public subunit   Coraopolis PA 15108
Michael Baker Jr., Inc. / Transportation Division Public subunit   Coraopolis PA 15108-2750
Precise Technology, Inc. Private   North Versailles PA 15137-2553
Adonix Transcomm, Inc. US subsidiary France Sewickley PA 15143
Cold Metal Products, Inc. Public   Sewickley PA 15143
Transtar, Inc. Public subunit   Monroeville PA 15146
GAI Consultants, Inc. Private   Monroeville PA 15146-1334
Compunetics, Inc. Private   Monroeville PA 15146-1430
IT Group, Inc. (The) Public   Monroeville PA 15146-2743
Compunetix, Inc. / Communications Systems Division Private Subunit   Monroeville PA 15146-4236
Wabtec Corp. Public   Wilmerding PA 15148-1036
WRS Motion Picture and Video Laboratory Private   Pittsburgh PA 15205
Calgon Carbon Corp. Public   Pittsburgh PA 15205-1131
Rapidigm, Inc. Private   Pittsburgh PA 15205-1312
Bayer Corp. / Industrial Chemicals Division US subsidiary Germany Pittsburgh PA 15205-9707
Bayer Corp. US subsidiary Germany Pittsburgh PA 15205-9741
Eichleay Engineers & Constructors Inc. Private Subunit   Pittsburgh PA 15206-4407
Management Science Associates, Inc. Private   Pittsburgh PA 15206-4490
Matthews International Corp. Public   Pittsburgh PA 15212-5838
Filmet, Inc. Private   Pittsburgh PA 15218-2500
DQE, Inc. Public   Pittsburgh PA 15219
Koppers Industries, Inc. Private   Pittsburgh PA 15219-1800
INDSPEC Chemical Corp. Public subunit   Pittsburgh PA 15219-1923
Dietrich Metal Framing, Inc. Public subunit   Pittsburgh PA 15219-2502
United States Steel Corp. Public   Pittsburgh PA 15219-2702
Union Switch & Signal Inc. US subsidiary Italy Pittsburgh PA 15219-3104
Cable Design Technologies, Inc. Public   Pittsburgh PA 15220
Computer Enterprises, Inc. Private   Pittsburgh PA 15220-1203
iGATE Capital Corp. Public   Pittsburgh PA 15220-2700
PEP Modular Computers, Inc. US subsidiary Germany Pittsburgh PA 15220-2783
Respironics, Inc. Public   Pittsburgh PA 15221-4401
General Nutrition Companies, Inc. US subsidiary Netherlands Pittsburgh PA 15222
Mylan Laboratories, Inc. Public   Pittsburgh PA 15222
Reunion Industries, Inc. Public   Pittsburgh PA 15222
Copperweld Corp. Public subunit   Pittsburgh PA 15222-1211
Carbide Graphite Group, Inc. (The) Public   Pittsburgh PA 15222-1435
FreeMarkets, Inc. Public   Pittsburgh PA 15222-2602
printCafe Systems, Inc. Private   Pittsburgh PA 15222-4600
Stargate, Inc. Private   Pittsburgh PA 15222-4656
Logica Carnegie Group US subsidiary UK - England Pittsburgh PA 15222-5405
Allegheny Technologies Inc. Public   Pittsburgh PA 15222-5479
Matthews International Corp. / Bronze Division Public subunit   Pittsburgh PA 15226-1040
Elkem Metals Co. L.P. US subsidiary Norway Pittsburgh PA 15230-0266
Westinghouse Electric Co. US subsidiary UK - England Pittsburgh PA 15230-0355
Mine Safety Appliances Co., Inc. Public   Pittsburgh PA 15230-0427
Mine Safety Appliances Co., Inc. / Instrument Divi Public subunit   Pittsburgh PA 15230-0427
Michael Baker Corp. Public   Pittsburgh PA 15231-0259
PDG Environmental, Inc. Public   Pittsburgh PA 15235-5068
Spang & Co. Private   Pittsburgh PA 15238
Chromalox, Inc. Private Subunit   Pittsburgh PA 15238
Lake Region Medical, Inc. Private Subunit   Pittsburgh PA 15238-2836
Aerotech, Inc. Private   Pittsburgh PA 15238-2897
Westinghouse Process Control, Inc. Public subunit   Pittsburgh PA 15238-2986
GENCO Distribution System Private   Pittsburgh PA 15238-3274
Pittsburgh Corning Corp. Public subunit   Pittsburgh PA 15239-2799
CONSOL Energy, Inc. US subsidiary Germany Pittsburgh PA 15241
Mellon Financial Corp. Public   Pittsburgh PA 15258-0001
PPG Industries, Inc. Public   Pittsburgh PA 15272-0001
PPG Industries, Inc. / Chemicals Group Public subunit   Pittsburgh PA 15272-0001
PPG Industries, Inc. / Coatings Group Public subunit   Pittsburgh PA 15272-0001
PPG Industries, Inc. / Fiber Glass Division Public subunit   Pittsburgh PA 15272-0001
Matthews International Corp. / Graphic Systems Div Public subunit   Pittsburgh PA 15275-1002
Resco Products, Inc. Private   Pittsburgh PA 15276
Spartech Polycom, Inc. Public subunit   Washington PA 15301-4524
Dynamet Inc. Public subunit   Washington PA 15301-6197
Hankison International Private Subunit   Canonsburg PA 15317-1700
ANSYS, Inc. Public   Canonsburg PA 15317-9565
Invensys Metering Systems US subsidiary UK - England Uniontown PA 15401-2494
Oglevee, Ltd Private   Connellsville PA 15425-3851
Sunrise Medical, Inc. / Respiratory Products Divis Public subunit   Somerset PA 15501-2125
AMI Doduco, Inc. Public subunit   Export PA 15632-8908
Elliott Co., Inc. Private   Jeannette PA 15644-1473
Kennametal Inc. / Mining and Construction Division Public subunit   Latrobe PA 15650
Kennametal Inc. Public   Latrobe PA 15650-0231
Timken Latrobe Steel Public subunit   Latrobe PA 15650-3294
Breeze Industrial Products Public subunit   Saltsburg PA 15681
Powerex, Inc. Public subunit   Youngwood PA 15697-1800
FMC Corp. / Food Systems & Handling Division Public subunit   Homer City PA 15748-1361
Morgan AM&T / Pure Carbon Division US subsidiary UK - England Saint Marys PA 15857-1422
Keystone Powdered Metal Co. Private   Saint Marys PA 15857-1661
St. Marys Carbon Co. Private   Saint Marys PA 15857-1696
Johnstown America Corp. Private   Johnstown PA 15901-1531
DRS Laurel Technologies Public subunit   Johnstown PA 15904-1134
Concurrent Technologies Corp. Private   Johnstown PA 15904-1935
L. Robert Kimball & Associates, Inc. Private   Ebensburg PA 15931-1048
Magnetics, Inc. Private Subunit   Butler PA 16003
Genesis Worldwide II, Inc. Private   Callery PA 16024
Penn United Technology, Inc. Private   Saxonburg PA 16056
II-VI Inc. Public   Saxonburg PA 16056-9499
Allegheny Plastics, Inc. Private   Cranberry Township PA 16066-1304
GA Industries, Inc. Private   Cranberry Township PA 16066-3696
CATTRON Group, Inc. Private   Sharpsville PA 16150-1126
Oberg Industries Private   Freeport PA 16229-0315
Miller-Dalloz Fall Protection US subsidiary France Franklin PA 16323-1941
National Forge Co. Private   Irvine PA 16329
PHB, Inc. Private   Fairview PA 16415-1899
Spectrum Control, Inc. Public   Fairview PA 16415-2829
Port Erie Plastics, Inc. Private   Harborcreek PA 16421-1098
Greenleaf Corp. Private   Saegertown PA 16433
Snap-tite, Inc. / Solenoid Valve Division Private Subunit   Erie PA 16505-1023
Snap-tite, Inc. Private   Erie PA 16506-2302
Plastek Group Private   Erie PA 16506-2920
Eriez Magnetics Private   Erie PA 16514-0608
GE Transportation Systems Public subunit   Erie PA 16531-0001
New PIG Corp. Private   Tipton PA 16684
Zippo Manufacturing Company Private   Bradford PA 16701
Kane Magnetics International, Inc. Private   Kane PA 16735-1068
RUTGERS Organics Corp. US subsidiary Germany State College PA 16801-7488 Corp. Public   State College PA 16801-7530
ACCU WEATHER, Inc. Private   State College PA 16803-2215
Supelco, Inc. Public subunit   Bellefonte PA 16823
Adelphia Communications Corp. Public   Coudersport PA 16915
Adelphia Business Solutions, Inc. Public   Coudersport PA 16915-1768
TVC Communications Private Subunit   Annville PA 17003
Freedom Forge Corp. Private   Burnham PA 17009-1644
Standard Steel Private Subunit   Burnham PA 17009-1698
Harsco Corp. Public   Camp Hill PA 17011-2599
Carlisle SynTec Inc. Public subunit   Carlisle PA 17013
Advantica Stoner US subsidiary UK - England Carlisle PA 17013-0086
CTS Reeves Public subunit   Carlisle PA 17013-2248
AGFA NDT, Inc. US subsidiary Belgium Lewistown PA 17044-9344
EUR Systems Private   Mechanicsburg PA 17055
Select Medical Corp. Public   Mechanicsburg PA 17055
Fry Communications Private   Mechanicsburg PA 17055-3198
Harsco Corp. / Gas and Fluid Control Group Public subunit   Mechanicsburg PA 17055-4379
Corning Frequency Control, Inc. Public subunit   Mount Holly Springs PA 17065-1821
Tyco Electronics Public subunit   Harrisburg PA 17105
Gannett Fleming, Inc. Private   Harrisburg PA 17106-7100
D&H Distributing Co., Inc. Private   Harrisburg PA 17110
Dayton Parts, Inc. Public subunit   Harrisburg PA 17110-2908
Synertech Private Subunit   Harrisburg PA 17110-9423
Phoenix Contact Inc. US subsidiary Germany Harrisburg PA 17111-0100
GS Electric Public subunit   Chambersburg PA 17201
TB Wood's, Inc. Public   Chambersburg PA 17201-1763
JLG Industries, Inc. Public   Mc Connellsburg PA 17233-9533
Grove Worldwide Private   Shady Grove PA 17256-0021
Landis Gardner Public subunit   Waynesboro PA 17268-2050
Gichner Shelter Systems Private   Dallastown PA 17313-0481
FCI Berg Electronics Corp. US subsidiary France Etters PA 17319-9351
Adhesives Research, Inc. Private   Glen Rock PA 17327-0100
Topflight Corp. Private   Glen Rock PA 17327-8625
Stewart Connector Systems, Inc. Public subunit   Glen Rock PA 17327-9199
CCX, Inc. / Hanover Wire Cloth Division Private Subunit   Hanover PA 17331-2027
General Dynamics OTS (Pennsylvania), Inc. Public subunit   Red Lion PA 17356-1426
Graham Packaging Company Private   York PA 17402
Svedala Industries, Inc. / Grinding Division US subsidiary Finland York PA 17403-1410
Dentsply International Inc. Public   York PA 17404-3880
Dentsply International Inc. / Trubyte Division Public subunit   York PA 17404-3880
York International Corp. Public   York PA 17405
FKI Industries, Inc. / Chain and Lifting Products US subsidiary UK - England York PA 17405-0792
United Defense Industries, Inc. / Ground Systems D Public subunit   York PA 17405-1512
New Standard Corp. Private   York PA 17406
D & E Communications Private   Ephrata PA 17522
Fenner Drives US subsidiary UK - England Manheim PA 17545-1747, Inc. Public subunit   Mountville PA 17554-1542
Berk-Tek US subsidiary France New Holland PA 17557-8303
Thermacore, Inc. Public subunit   Lancaster PA 17601-4275
BURLE Industries, Inc. Private   Lancaster PA 17601-5688
Philips Communication, Security and Imaging US subsidiary Netherlands Lancaster PA 17601-5814
Lancaster Laboratories, Inc. Private Subunit   Lancaster PA 17601-5994
Kerr Group, Inc. Private   Lancaster PA 17602-2104
Herley Industries, Inc. Public   Lancaster PA 17603-4025
Blue M Public subunit   Williamsport PA 17701
Lunaire Limited Public subunit   Williamsport PA 17701
Textron Lycoming Public subunit   Williamsport PA 17701-4472
Gruenberg Oven Co., Inc. Public subunit   Williamsport PA 17701-5500
Brodart Co. Private   Williamsport PA 17705-0001
Andritz, Inc. US subsidiary Austria Muncy PA 17756-1227
JPM Company (The) Public   Lewisburg PA 17837-8822
Bethlehem Steel Corp. Public   Bethlehem PA 18016-7600
Mannesmann Rexroth Corp. / Industrial Hydraulics D US subsidiary Germany Bethlehem PA 18017-2131
HYDAC International Private   Bethlehem PA 18017-2146
F.L. Smidth US subsidiary Denmark Bethlehem PA 18017-2188
B. Braun Medical Inc. US subsidiary Germany Bethlehem PA 18018
Pentamation Enterprises, Inc. Public subunit   Bethlehem PA 18018-5716
Binney & Smith Inc. Private Subunit   Easton PA 18040
Knoll, Inc. Private   East Greenville PA 18041
Paragon Technologies, Inc. Public   Easton PA 18044-0070
Allen Organ Co. Public   Macungie PA 18062-1165
Essroc Corp. US subsidiary Italy Nazareth PA 18064
Rodale, Inc. Private   Emmaus PA 18098-0099
Polymer Dynamics, Inc. Private   Allentown PA 18103
Penn Treaty American Corp. Public   Allentown PA 18103
Agere Systems, Inc. Public   Allentown PA 18103-3229
Mack Trucks, Inc. Private   Allentown PA 18105-5000
Mack Trucks, Inc. / MackPower Division Private Subunit   Allentown PA 18105-5000
Akrion Private   Allentown PA 18106-9268
Sanbor Corp. Private   Allentown PA 18106-9336
Air Products and Chemicals, Inc. Public   Allentown PA 18195-1501
Air Products and Chemicals, Inc. / Chemicals Group Public subunit   Allentown PA 18195-1501
Air Products and Chemicals, Inc. / Gases and Equip Public subunit   Allentown PA 18195-1501
KAMA Corp. Public subunit   Hazleton PA 18201-7754
Laird Technologies, Inc. US subsidiary UK - England Delaware Water Gap PA 18327-0650
Aventis Pasteur USA US subsidiary France Swiftwater PA 18370-0187
Anemostat Public subunit   Scranton PA 18504
Commonwealth Telephone Enterprises, Inc. Public   Dallas PA 18612-9745
Schott Glass Technologies Inc. US subsidiary Germany Duryea PA 18642-2036
Altec Industries, Inc. / Eastern Division Private Subunit   Plains PA 18705-3821
OSRAM SYLVANIA / Chemicals and Metallurgical Divis US subsidiary Germany Towanda PA 18848
Penn Color, Inc. Private   Doylestown PA 18901-2399
Severn Trent Water Purification, Inc. US subsidiary UK - England Colmar PA 18915-9727
PennEngineering Public   Danboro PA 18916
PennEngineering / PEM Fastening Systems Division Public subunit   Danboro PA 18916
Talk America Holdings, Inc. Public   New Hope PA 18938-1079
L-3 Communications Corp. / Telemetry East Division Public subunit   Newtown PA 18940-1803
Goodrich Corporation / France Compressor Products Public subunit   Newtown PA 18940-1821
ICT Group, Inc. Public   Newtown PA 18940-4000
Scott Specialty Gases Private   Plumsteadville PA 18949-0310
AM Communications, Inc. Public   Quakertown PA 18951-2107
Environmental Tectonics Public   Southampton PA 18966
CW Industries Private   Southampton PA 18966-3838
Draeger Medical, Inc. US subsidiary Germany Telford PA 18969-1042
Accu-Sort Systems, Inc. Private   Telford PA 18969-1196
Sabre Systems, Inc. Private   Warminster PA 18974-3229
ABB Automation / Instrumentation Division US subsidiary Switzerland Warminster PA 18974-4974
Judge Group, Inc. (The) Public   Bala Cynwyd PA 19004
Pegasus Communications Corp. Public   Bala Cynwyd PA 19004
Purolite Co. US subsidiary UK - Wales Bala Cynwyd PA 19004-1702
Primavera Systems, Inc. Private   Bala Cynwyd PA 19004-3481
Dunmore Corp. Private   Bristol PA 19007-1620
Selas Corp. of America Public   Dresher PA 19025
McNeil Consumer Health Care Public subunit   Fort Washington PA 19034-2299
Severn Trent Laboratories, Inc. US subsidiary UK - England Fort Washington PA 19034-2707
ImageMax, Inc. Public   Fort Washington PA 19034-3409
Pilling Surgical Co. Public subunit   Horsham PA 19044-1227
VerticalNet, Inc. Public   Horsham PA 19044-2265
SCIREX Corp. Private   Horsham PA 19044-3405
Envirosource, Inc. Public   Horsham PA 19044-3422
Thomas Technology Solutions, Inc. Private Subunit   Horsham PA 19044-3502
SPS Technologies, Inc. Public   Jenkintown PA 19046
Technitrol, Inc. Public   Trevose PA 19053-2519
WorldGate Communications, Inc. Public   Trevose PA 19053-6644
Hercules, Inc. / BetzDearborn Division Public subunit   Trevose PA 19053-6742
Pinkerton Computer Consultants, Inc. Private   Trevose PA 19053-6940
Foamex International, Inc. Public   Linwood PA 19061-3921
Prophet 21, Inc. Public   Yardley PA 19067-1594
Messer Gas Technology & Services Group US subsidiary Germany Morrisville PA 19067-3613
Kenexa Corp. Private   Wayne PA 19087
Wyeth Pharmaceuticals Public subunit   Saint Davids PA 19087
SunGard Data Systems Inc. Public   Wayne PA 19087-1572
SunGard Availability Services Public subunit   Wayne PA 19087-1572
SunGard Planning Solutions Public subunit   Wayne PA 19087-1572
Triumph Group, Inc. Public   Wayne PA 19087-1593
Devon Consulting, Inc. Private   Wayne PA 19087-1898
Safeguard Scientifics, Inc. Public   Wayne PA 19087-1935
INTERNATIONAL GROUP, INC. (THE) Private   Wayne PA 19087-2544
Airgas, Inc. Public   Radnor PA 19087-5283
Asplundh Tree Expert Co. Private   Willow Grove PA 19090
Kulicke & Soffa Public   Willow Grove PA 19090-1795
Lockheed Martin Management Data Systems Public subunit   Philadelphia PA 19101-8048
Comcast Corp. Public   Philadelphia PA 19102-2100
Alliance Consulting Group, Inc. Private   Philadelphia PA 19103
Rosenbluth International Private   Philadelphia PA 19103
FMC Corp. Public   Philadelphia PA 19103
Hunt Corp. Public   Philadelphia PA 19103
FMC BioPolymer Public subunit   Philadelphia PA 19103
Sunoco, Inc. / Chemicals Division Public subunit   Philadelphia PA 19103
Sunoco, Inc. Public   Philadelphia PA 19103-1628
CDI Corp. Public   Philadelphia PA 19103-2713
ATOFINA Chemicals, Inc. US subsidiary France Philadelphia PA 19103-3231
Day & Zimmermann Group, Inc. Private   Philadelphia PA 19103-3638
Day & Zimmermann International, Inc. Private Subunit   Philadelphia PA 19103-3638
FMC Corp. / Agricultural Products Group Public subunit   Philadelphia PA 19103-7501
FMC Corp. / Pharmaceutical Division Public subunit   Philadelphia PA 19103-7501
Strategic Management Group, Inc. Private   Philadelphia PA 19104-2614
Pennoni Associates Inc. Private   Philadelphia PA 19104-2897
Institute for Scientific Information US subsidiary Canada Philadelphia PA 19104-3389
Nelson Information Services Private   Philadelphia PA 19106
Rohm and Haas Co. Public   Philadelphia PA 19106-2399
Lippincott, Williams, Wilkins US subsidiary Netherlands Philadelphia PA 19106-3620
ARAMARK Corporation Public   Philadelphia PA 19107
HP Bluestone Public subunit   Philadelphia PA 19113-1597
PCI Services Public subunit   Philadelphia PA 19114
SPD Technologies, Inc. Public subunit   Philadelphia PA 19116-4299
JWS Delavau Co., Inc. Private   Philadelphia PA 19154-2105
CIGNA Corporation Public   Philadelphia PA 19192
AMETEK, Inc. Public   Paoli PA 19301
Dermik Laboratories, Inc. US subsidiary France Berwyn PA 19312
PQ Corporation Private   Berwyn PA 19312
Triton PCS Holdings, Inc. Public   Berwyn PA 19312-1177
Vertex Inc. Private   Berwyn PA 19312-1195
JUMO Process Control, Inc. US subsidiary Germany Coatesville PA 19320-1895
Bethlehem Lukens Plate Public subunit   Coatesville PA 19320-4006
Xerox Connect, Inc. Public subunit   Exton PA 19341-1117
Bentley Systems, Inc. Private   Exton PA 19341-1151
West Pharmaceutical Services, Inc. Public   Lionville PA 19341-1320
Alti America, Inc. Private   Exton PA 19341-1330
Sartomer Co., Inc. US subsidiary France Exton PA 19341-2530
LNP Engineering Plastics, Inc. Public subunit   Exton PA 19341-2546
Automated Financial Systems, Inc. Private   Exton PA 19341-2872
MG Industries US subsidiary Germany Malvern PA 19355
DecisionOne Corp. Private   Frazer PA 19355
DentalEZ Group Private   Malvern PA 19355
Vishay Intertechnology, Inc. Public   Malvern PA 19355
United Messaging, Inc. Private   Malvern PA 19355-1212
Siemens Medical Solution Health Services Corporati US subsidiary Germany Malvern PA 19355-1406
Systems & Computer Technology Corp. Public   Malvern PA 19355-1408
Systems & Computer Technology Corp. / Technology M Public subunit   Malvern PA 19355-1408
IKON Office Solutions, Inc. Public   Malvern PA 19355-1453
Sanchez Computer Associates, Inc. Public   Malvern PA 19355-1482
QVC, Inc. Public subunit   West Chester PA 19380
Roy F. Weston, Inc. Public   West Chester PA 19380-0903
Cephalon, Inc. Public   West Chester PA 19380-4249
Amkor Technology, Inc. Public   West Chester PA 19380-5964
Electronics Boutique Holdings Corp. Public   West Chester PA 19382
VFL Technology Corp. Private   West Chester PA 19382-7594
Henkel Corporation US subsidiary Germany Gulph Mills PA 19406
C-E Minerals, Inc. US subsidiary France King of Prussia PA 19406
XRT, Inc. US subsidiary France King of Prussia PA 19406
Universal Health Services, Inc. Public   King of Prussia PA 19406
Aventis Behring LLC US subsidiary France King of Prussia PA 19406-0901
Dalloz Safety, Inc. US subsidiary France King of Prussia PA 19406-1334
InterDigital Communications Corp. Public   King of Prussia PA 19406-1409
TeleSpectrum Worldwide, Inc. Public   King of Prussia PA 19406-2831
C&D Technologies, Inc. Public   Blue Bell PA 19422-1952
Henkels & McCoy, Inc. Private   Blue Bell PA 19422-1958
Yarway Corp. Public subunit   Blue Bell PA 19422-2362
Unisys Corp. Public   Blue Bell PA 19424-0001
Unisys Corp. / Global Industries Public subunit   Blue Bell PA 19424-0001
UTI Corp. Private   Collegeville PA 19426-2112
Superior Tube Co. Private   Collegeville PA 19426-3112
Synygy, Inc. Private   Conshohocken PA 19428
Breakaway Solutions, Inc. Public   Conshohocken PA 19428
Quaker Chemical Corp. Public   Conshohocken PA 19428
CECO Environmental Corp. Public   Conshohocken PA 19428-1001
Hale Products, Inc. Public subunit   Conshohocken PA 19428-1954
PennEngineering / Pittman Motors Division Public subunit   Harleysville PA 19438-2007
Met-Pro Corp. Public   Harleysville PA 19438-2018
Brooks Instrument Public subunit   Hatfield PA 19440-0903
Greene, Tweed & Co., Inc. Private   Kulpsville PA 19443
Teva Pharmaceuticals USA, Inc. US subsidiary Israel North Wales PA 19454
HealthAnswers, Inc. Private   North Wales PA 19454
Merck & Co., Inc. / U.S. Human Health Division Public subunit   North Wales PA 19454
Triumph Controls, Inc. Public subunit   North Wales PA 19454-4137
SEI Investments Company Public   Oaks PA 19456
Teleflex, Inc. Public   Plymouth Meeting PA 19462-1075
Wetherill Associates, Inc. Private   Royersford PA 19468
Sermatech International, Inc. Public subunit   Limerick PA 19468-1699
Houghton International, Inc. Private   Valley Forge PA 19482
Saint-Gobain Vetrotex America / Fiber Glass Reinfo US subsidiary France Valley Forge PA 19482-0860
Alco Industries, Inc. Private   Valley Forge PA 19482-0937
Integrated Circuit Systems, Inc. Public   Valley Forge PA 19482-0968
Merck & Co., Inc. / Research Labs Division Public subunit   West Point PA 19486-0004
Cabot Corp. / Performance Materials Public subunit   Boyertown PA 19512
STV Group, Inc. Private   Douglassville PA 19518-8713
RAM Industries, Inc. Private   Leesport PA 19533-0629
GAI-Tronics Corp. Public subunit   Mohnton PA 19540-1503
TIMET Public subunit   Morgantown PA 19543
International Trepanation Advocacy Group Private   Wernersville PA 19565-0065
Quadrant Engineering Plastic Products US subsidiary Switzerland Reading PA 19605
Fidelity Technologies Corp. Private   Reading PA 19605-2961
Arrow International, Inc. Public   Reading PA 19605-9606
Dana Corp. / Parish Structural Products Division Public subunit   Reading PA 19612-3459
Yuasa, Inc. US subsidiary Japan Reading PA 19612-4145
Carpenter Technology Corp. Public   Reading PA 19612-4662
KB Alloys, Inc. Private   Reading PA 19612-4927
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