Petroleum Instrumentation & Technological Services
PFT Putz und Fordertechnik GmbH
Pittenger & Smith, P.C.
Planck Heinrich
Potthast James W.
Potthast & Associates
Poyet Georges
Price Charles Dennis
Price Randall R.
RAP Technologies LLC
Rastra Technologies, Inc.
Ratliff Grover C.
Resource Recovery Systems, Inc.
Rez Donald H.
Ricketts John W.
Romier Alain
Rose Leo J.
Roth Charles B.
Routson Edwin J.
Sakagami Kiyoshi