Pettersson Rolf
Pfleghar Wolfgang
Pitkanen Veikko
Pivatic Oy
Platt Grayeme E.
Pljugachev Viktor Gavrilovich
Poe John R. B.
Poirier Robert M.
Postupack Andrew
Prosise Charles L.
Proto Planning Co.
PTP Patentierte Technologische Prozesse AG
Quaas Dietmar G.
Raffin Louis
Rahn Oskar
Ready Technology, Inc.
Reed Manufacturing Co.
Reischl Norbert M.
REO Hydraulic Pierce & Form
Reznichenko Fedor A.