Olsen Kaj K.
Oosaki Hiroshi
Op't Roodt Inigo
Osaka Hatsudenki Co., Ltd.
Ostertag Hans J.
Ostrowski Wolfgang
Ott Alfred
Oxy-Dry Sprayer Corporation
Oy Lars Ludin Patent Ab
Packes Helmut
Palma Victor J.
Palmer Delbert W.
Palu Attilio D.
Paretskoi Mikko
Park Wi Yeong
Parry Steve
Patterson Douglas D.
Paul Journee
Pavey John S.
Peasley William Lacey