List of Brands
Brand, Country (Engines)
O’NEIL AIRPL, Unknown
OBERTH, Romanía
OBERURSEL, Germany
OBRAM, USA See: OLM
OCCHI - LEGENDRE, Unknown
OCENASEK, Czechoslovakia
ODA, Germany
ODERFELD, Poland
ODIER, France
ODU, Russia
OEB, Unknown
OEDB, Russia See: OMKB
OEHRLI & JANDASEK, USA
OERLIKON, Switzerland
OERLIKON-ROSSIER, Switzerland
OESTERREICHISCHE - FIAT WERKE AG, Austria
OESTRICH, Hermann, Germany
OFFENHAUSER, USA
OFFMAR, Italy
OGMA, Portugal
OGORELEC, Croatia
OHAIN, Germany
OHKA, Japan
OKB, USSR / Russia
OKBM, USSR / Russia
OKL, Poland
OKOK, China
OLDFIELD, USA
OLDSMOBILE, USA
OLLER, Spain
OLM, Belgium
OMC, USA
OMIR, Italy
OMIYA FUJI, Japan
OMKB, Russia
OMNIPOL, Czechoslovakia
OMSK/Baranov/Glushenkov, USSR / Russia
ONAN, USA
ONERA, France
OPEL, Germany
ORAO, Yugoslavia
ORBIT MOTOR LTD, Russia
ORBITAL, Australia
ORBITEC, USA
ORENDA JET ENGINES LTD, Canada
ORENDA RECIPROCATING INC., Canada
ORESTE BERTA, Argentina
ORION (Czechoslovakia), Czechoslovakia
ORION (USA), USA
ORION PROPULSION INC, USA
ORLO, USA
ORLOSVAERFTET, Denmark
ORMAT, Israel
ORTUÑO, Spain
OSCAR WESTERMAYER, Austria See: Westernmayer
OSTMARK, Austria
OTIS - PIFRE, France
OTO MELARA, Italy
OTRAG, Germany
OTTAWA CAR & AIRCRAFT CORP., Canada
OTTO-MADER, Germany
OTTO-SCHWADE, Germany
OTTOBRUNN, Germany
OULTON, USA
OUTBOARD MARINE Co, USA
OWENS, USA
OY, Finland