▁Poland ▁ ▁Q ▁ ▁Quick ▁Mot ors ▁Co ▁ ▁R ▁▁ ▁Rad ne ▁Motor ▁AB ▁ ▁R app - M ot oren werke ▁GmbH ▁— ▁Germany ▁ ▁R asm ussen ▁ ▁R aus en berger ▁ ▁R aven ▁Red riv es ▁ ▁R B V Z ▁ ▁Re action ▁Mot ors ▁— ▁US ▁ ▁R ear win ▁ ▁Rect imo ▁ ▁Red rup ▁ ▁R ED ▁A ircraft ▁GmbH ▁ ▁– ▁Germany ▁ ▁Rég nier ▁Eng ines ▁– ▁France ▁ ▁Re id ▁Gas ▁Engine ▁Co ▁— ▁US ▁ ▁Ren ault ▁— ▁France ▁ ▁R . E . P . ▁ ▁R FB ▁ ▁Rhein met all - B ors ig ▁ ▁Ric ardo ▁ ▁Ric ardo - H alf ord ▁— ▁UK ▁ ▁R ighter ▁— ▁US ▁ ▁Roberts ▁Motor ▁Co ▁ ▁Rock well ▁International ▁— ▁US ▁ ▁Rock y ▁Mountain ▁ ▁Roll s - Ro y ce ▁Limited ▁— ▁UK ▁ ▁Roll s - Ro y ce ▁North ▁America ▁— ▁US ▁ ▁Roll s - Ro y ce ▁pl c ▁— ▁UK ▁ ▁Roll s - Ro y ce / S NE C MA ▁ ▁Roll s - Ro y ce / T urb ome ca ▁ ▁Rot ax ▁— ▁Austria ▁ ▁Rot ec ▁A eros port ▁— ▁Australia ▁ ▁Rot ex ▁Electric ▁ ▁Rot or W ay ▁International ▁— ▁US ▁ ▁Rot ron ▁Power ▁Ltd ▁ ▁R over ▁Company ▁ ▁Royal ▁A ircraft ▁Factory ▁— ▁UK ▁ ▁R R J A EL ▁ ▁Rum pler ▁ ▁Ryan ▁Aer onaut ical ▁Cor