▁Corporation ▁— ▁US ▁ ▁Lee ▁ ▁L ena pe ▁ ▁Les ▁Long ▁Long ▁Har le quin ▁ ▁Less ner ▁ ▁L HT EC ▁— ▁US ▁ ▁Liber ty ▁ ▁Light ▁ ▁Lim bach ▁Flug mot oren ▁— ▁Germany ▁ ▁Lim bach ▁ ▁L MC ▁– ▁China ▁ ▁Lincoln ▁Motor ▁— ▁US ▁ ▁Lincoln ▁ ▁Lock he ed ▁ ▁L OM ▁Praha ▁( L ete cke ▁Op rav ny ▁M ales ice , ▁Praha ) ▁ ▁Lor avia ▁ ▁Lor raine - D iet rich ▁— ▁France ▁ ▁Lot are v ▁ ▁Lot are v ▁— ▁Russia / S ov iet ▁Union ▁( see ▁I v chen ko - Progress ) ▁ ▁L oug head ▁A ircraft ▁M fg ▁Co ▁ ▁L SA - Eng ines ▁ ▁Lucas ▁ ▁Ly coming ▁ ▁Ly ul ka ▁— ▁Russia / S ov iet ▁Union ▁ ▁M ▁▁ ▁Mac Cl atch ie ▁ ▁Ma com ber ▁A vis ▁Engine ▁Co ▁ ▁M AN - R oll s - Ro y ce ▁ ▁Man fred ▁We iss ▁ ▁Man ly ▁ ▁Mant ov ani ▁ ▁March etti ▁ ▁Mar cm ot or ▁ ▁Mar lin - R ock well ▁ ▁Mar qu ard t ▁Corporation ▁ ▁Martin ▁Mot ors ▁Co ▁ ▁Mar u ▁ ▁Maxim ot or ▁ ▁May bach ▁— ▁Germany ▁ ▁May o ▁ ▁McC ul lo ch ▁Mot ors ▁— ▁US ▁ ▁Mc D onn ell ▁ ▁Mc D ow ell ▁ ▁M ead ▁ ▁M ek ker ▁ ▁Men as co ▁Motor ▁Company ▁—