| P & H | P T C Production & Trading Com | P-M Corporation | P-Q Controls |
| P.C. | P.C.D.S. | P.C.I. | P.D.T.E. |
| P.E.C. | P.E.D. | P.E.I. | P.E.P. |
| P.E.T.S. | P.E.T.S., Inc. | P.I.V. | P.K.S. |
| P.M. Corporation | P.P.I. | P.P.S. Manufacturing | P.S.E.D.A. |
| P.S.R. | PAT | PC Industries | PCH Engineering |
| PCI | PCS | PL | PMI |
| PPG Biomedical Systems | PRT | PSC | PTI Integrated Systems |
| PWB | Paar | Pace | Pace MAster I |
| PaceMaster | Pacemaster Pro Series | Pacepack | Pacer |
| Pachydyne | Pacific | Pacific Controls | Pacific Electronic |
| Pacific Engineering | Pacific Instruments | Pacific Power | Pacific Power Products 3p |
| Pacific Power Source | Pacific Power Source Corp | Pacific Research | Pacific Scientific |
| Package Controls | Package Machinery | Packaged Power | Packaging Services |
| Pacmac | Pads Development | Pak-Tronics | Pako |
| Paktronics | Paladin Tools | Pan Am | Pan-Asia |
| Pan-Mag | Panacom | Panadac | Panalarm |
| Panama | Panametrics | Panasonic | Panasonic Industrial |
| Panastop | Pancon | Pandjiris | Panduit |
| Panel Electronics | Panel-Tec | Panels & Controls | Panoramic |
| Pantec | Papst-Motoren | Para Systems | Paragon |
| Paragon Electric | Paragon Electrical Products | Parametrics | Paramount |
| Parelec | Parker | Parker Compumotor | Parker Hannifin Corp |
| Parker Parvex | Parking & Traffic Control Inc. | Parking Products | Parma |
| Parmak Precision | Parmeko | Parsons | Partlow |
| Parvalux | Parvex | Parvus | Pasaban |
| Pasar | Pascall Electronics | Pass & Seymour | Pat |
| Patlite Corporation | Paul Lippke | Pavid | Paxall |
| Payne Engineering | Pbf | Pc Controls | Pc Industries |
| Pc Power And Cooling Inc | Pcc | Pci | Pcs |
| Pcs Computer | Pcsc | Pct Controls | Pds Technologies |
| Peabody Flomatcher | Peak | Peaktronics | Peavey |
| Peco | Peco Ii | Peddinghaus | Peek Traffic |
| Pees | Pees Elektronik | Pegaso Elettronica | Pegasus |
| Peiner | Pel | Pelco | Peligro |
| Pellerin-Milnor | Pelton & Crane | Pemco | Penberthy |
| Penn Microsystems | Penn Systems | Penn Video | Pennsylvania Scale |
| Penny & Giles | Penril Data Comm | Pensar Corporation | Penta Corporation |
| Pentek | Penwalt | Pep | Pepperl & Fuchs |
| Per Hornsved | Per-Fil | Perceptron | Perfect Power |
| Performance Controls | Performance Feeders | Performance Systems | Periphlex Ltd. |
| Peritek | Perkin-Elmer | Perma-Drive | Permutit |
| Perretta Graphics | Pertron | Pesaro-Italy | Peschel Instruments |
| Peter Electronic | Peter Horstmann | Petro-Vend | Pfaff |
| Pfankuch Maschinen | Pfc | Pfeffer Getriebebau | Pfeiffer Vacuum |
| Pfening | Pfister | Pfitzinger | Pg |
| Phase One | Phasetronics | Phason | Phastron |
| Phd Inc. | Phenix | Phenix Inc. | Phihong |
| Phihong Enterprise | Phihong Usa Corp | Philadelphia Gear | Philips |
| Philips Fax | Philips Power | Philips Power Supplies | Phillips |
| Phillips Cables | Philtek Electronics | Philtek Power Corp | Phoenix Contact |
| Phoenix Data | Phoenix Digital | Phoenix Power System | Phoenixtec |
| Photo-Count | Photocircuits | Photocraft | Photomation |
| Photon Kinetics | Photoswitch | Phytron | Piana Elettronica |
| Picanol | Pickering | Pico Electronics | Pikosystems Oy |
| Pillar Corporation | Pillar Industries | Piller | Pilz |
| Pines | Pinnacle Systems | Pioneer | Pioneer Electric |
| Pioneer Engineering | Pioneer Instrument | Pioneer Magetics | Pioneer Magnetics |
| Pionner | Pitman | Pitney Bowes | Pitney-Bowes |
| Pittini | Pivot | Pixelink | Pkm |
| Pl | Plainview Batteries | Planar Systems | Planet |
| Plasma | Plasma Technik | Plasser & Theurer | Plastech |
| Plasthing | Plastic Service | Plasticolor | Plastore Inc. |
| Platine | Plc Direct | Plessey | Plessey Peripheral |
| Plockmatic | Plt Stc | Plus | Pmc |
| Pmf | Pmg | Pmi Motion | Pmi Motors |
| Pms | Pmv | Pneu-Con | Pneu-Power |
| Pneumafil | Pneumatech | Pneumatic Products | Pneumatics |
| Pneumercator | Pneumercator Co. | Pneutronics | Pnp |
| Point | Polar | Polar Grafik | Polar-Mohr |
| Polariod | Polaroid | Polatech | Poletti & Osta |
| Poloroid | Polyamp | Polyscience | Polysonics |
| Polyspede | Polyspede Electronics | Polytron | Polytron Devices |
| Polytronics | Polytype | Poole Ltd. | Porelon Inc |
| Port Ethernet | Portec | Portland Iron | Positec |
| Positech | Positive Contact | Positron | Postal Technologies |
| Pot-Zaehler | Potrans Electrical | Potrans International | Potter & Brumfield |
| Poultry Management | Pourtier | PowCon | Powcon |
| Powdec Technologies | Powec | Powec As | Power Architects |
| Power Box | Power Circuits | Power Components | Power Components Corp |
| Power Control | Power Control Corp. | Power Control Sys. | Power Control Systems |
| Power Controls Inc. | Power Conversion | Power Conversion Products Llc | Power Conversion Technologies |
| Power Convertibles Corp | Power Designs | Power Designs Inc. | Power Devices |
| Power Electronic | Power Electronics | Power Electronics Bv | Power Enterprise Co Ltd |
| Power General | Power Innovation Stromversorgun | Power Instruments | Power Management |
| Power Mate Technology | Power Measurement | Power Motion | Power One |
| Power One Advanced Power Solution | Power One High Density Board | Power Pac Inc. | Power Paragon |
| Power Pilot | Power Plaza | Power Plus Electronics | Power Products |
| Power Prop | Power Research Technology Prt | Power Sensors Corp | Power Solution |
| Power Solutions | Power Solve | Power Sonic Corp | Power Source |
| Power Spec | Power Supply Concepts | Power Switch Corp | Power Switch Corp. |
| Power Systems | Power Systems Inc | Power Systems Inc. | Power Technics |
| Power Technology 3y | Power Ten | Power Ten Inc. | Power Trade |
| Power Trends | Power Vector | Power Win | Power supply |
| Power supply unknown make | Power-One | Power-One D.C. Power Supplies | Power-Source |
| Power-Trol | PowerWare | Powerbox | Powerbox Australia |
| Powerbox Europe | Powercube | Powerdsine | Powerex |
| Powergate | Powerlab | Powerline | Powerline Quel |
| Powerline Quel | Powermate | Powernet | Powernetics |
| Powers | Powers Process Ctrls | Powers Regulator Co. | Powers-Transitube |
| Powerspec | Powerstax | Powerstream Technology | Powertec |
| Powerten | Powertron | Powertronic | Powertronic Systems |
| Powertronix | Powervar | Powervo | Powervolt |
| Powerware | Powerware Corp | Powr Ups Corporation | Ppc |
| Ppg Industries | Ppp Contraves | Ppt Vision | Pr Electronics |
| Prab Robots Inc. | Practical Peripherals | Prairiecomm | Pratt |
| Pratt & Whitney | Prc Corporation | Precinum | Precise |
| Precise Power | Precision Automation | Precision Automation Inc | Precision Digital |
| Precision Drives | Precision Graphics | Precision Micro | Precision Scientific |
| Preco Industries | Precon | Precor | Preferred Electronics |
| Preferred Instrument | Premier | Premier Magnetics | Premier Pneumatics |
| Premium S A | Prentice | Prescolite | Prescolite Controls |
| Press Partners | Pressco | Presstech | Presstek |
| Prestek | Prestolite Power | Preston Consulting | Pretec |
| Preussag Ag | Preussag Feuerschutz | Prima Comm & Manufact | Prima Electronics |
| Primax Technologies | Prime | Prime Controls | Prime Manufacturing |
| Prime Power | Prime Systems | PrimeLine Soltec | Primech |
| Princo | Print | Printelec | Printronix |
| Prism | Pro log Corporation | Pro-Face | Pro-Log |
| Pro-Tech | Process Computer | Process Control Sys. | Process Electronics |
| Process Elektronik | Process Instruments | Process Technology | Process Welding Systems |
| Procon Pas | Procond | Procond Elettronica | Procond Elettronica power supply |
| Proconor | Procos | Procter & Gamble | Product Resources |
| Production Equipment | Production Process | Proface | Profax Inc. |
| Profiled Motion | Proftech Systems | Progel | Programmable Power Products |
| Promac | Prometrix | Promicon Systems | Promotec |
| Pronomic | Proond | Propel | Proportion Air Inc |
| Prosio Pneumatic | Prosoft | Protean Systems | Protech |
| Proteck | Protect | Protection Controls | Protectowire |
| Protek | Protek Electronic | Protek Electronics Corp. | Protema Ab |
| Proteus Industries | Proto Circuit | Proto Trak | Proton |
| Prototec | Prototrak | Provad Semyre | Proven Designs Inc. |
| Provisor | Provue | Proximity | Ps & D |
| Psa | Psc | Psi | Psr |
| Psu Ltd | Pt Components | Pti Controls | Publishers Equipment |
| Puleo Electronics | Pulnix | Puls | Puls Elektronische Stromversorg |
| Pulsafeeder | Pulsar | Pulse | Pulver Laboratories |
| Pump Boss | Punos Elektronik | Puratech | Purrco |
| Purup Prepress A s | Pv Products | Pwr Inc. | Pyco |
| Pylon Electronics | Pyott-Boone | Pyramid | Pyramid Power Systems |
| Pyromation | Pyrometer Instrument | Pyronics Inc. | Pyrotronics |
| pilz |
