Pietro Dondi & Figli S.r.l.
Plyler Gary M.
Poche John M.
Pollard Charles H.
Pounds Motor Company
Prater Paul L.
R. & R. Trench Equipment Limited
R. J. Brown & Associates AG
Raguse Steven F.
Riley Terrence H.
Rotary Ditchers Ltd.
Sackett Richard C.
Sausar Holdings Pty. Limited
Schott Jeffrey David
Shpektorov Iosif N.
Shpektorov Vladimir N.
Snyder Paul M.
Sokolov Gennady I.
Sommerfeld Gerhard
Spetsialnoe Konstruktorskoe Buro "Gazstroimashina"