Pruftechnik Dieter Busch AG
Pruvost Philippe
Purgill Dewain A.
Purner Georg N.
Qgura Clutch Co., Ltd.
Quadrant Technology
Quelo Vincent
Quimby David C.
Quizix, Inc.
Radovinsky Alexey L.
Radvanyi Laszlo
Railfix N.V.
Railway Technical Research Institute, The Juridical Foundation
Ramakrishnan Srinivasan
Ramirez Diego A.
Ramirez Diego Alberto
Ranze Richard Andrew
Rask Mark C.
Ratec Maschinenentwicklungs - und Verwaltungs-GmbH
Ratto Joseph J.