Okado Masao
Okano Masanori
Okuno Toru
Olle Jean L.
Olsson Karl G.
Olsta John E.
Omega Design Corpoation
Onoda Cement Co. Ltd.
Ooishi Hideo
Organ William L.
Orkney Water Test Centre Limited
Osenberg Klaus-Dieter
Osterhaus Elmer
Osumi Kakuji
Ouellette Richard J.
Ouellette Machinery System, Inc
Oullette Machinery Systems, Inc.
P.B.C. Systems, Inc.
Pacaux Patrick
Pacific States Cast Iron Pipe Co.