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Forum: Patents
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Stingray 0 1699
No New Posts Nicolas J. Medvedeff convertiplane and related patents
Stingray 1 1049
No New Posts Joseph S. Pecker Aircraft Having Sustaining Rotors
Stingray 0 456
No New Posts S. D. Robins combination airplane helicopter
Stingray 3 1138
No New Posts Durov Dmitry twin-boom tri tilt-rotor
Stingray 0 532
No New Posts Carter Allen Tall V/STOL aircraft
Leela25 2 525
No New Posts Variable chord morphing helicopter rotor
Leela25 0 405
No New Posts Gyrodyne patents
Stingray 14 1802
No New Posts Boeing
=hothorizon= 3 2495
No New Posts Zimmerman Helicopter flying apparatus
Stingray 3 1329
No New Posts Alberto Alvarez Calderon F. 3-rotor twin-boom VTOL aircraft
Stingray 0 1321
No New Posts Haviland Hull Platt's VTOL patents
Stingray 2 1786
No New Posts Douglas Model-828/A?
Stingray 0 1213
No New Posts Sikorsky helicopter-boat
Stingray 0 1230
No New Posts Weir Patents
Ross 0 1162
No New Posts Flying trucks from Handley-Page & Westland.
Ross 0 1258
No New Posts Piasecki patents
Stingray 1 1142
No New Posts Wilford tailsitter VTOL aircraft
Stingray 2 2094
No New Posts Andrew E. Friedrich Supersonic VTOL aircraft
Stingray 0 1009
No New Posts General Electric tail-sitter helicopter-airplane
Stingray 0 941
No New Posts Henschel Helicopter, 1939
Stingray 0 968
No New Posts Edward F. Andrews composite helicopter
Stingray 0 967
No New Posts Dougals tandem rotor helicopter
hesham 0 876
No New Posts John K. Sanders Aerodynamically stable VTOL aircraft
failcopter67 0 928
No New Posts Firestone Tire a Rubber Company
=hothorizon= 3 1483
No New Posts Ishida TW-68 Tiltwing patent
Stingray 1 3777
No New Posts Do You Really Need a Patent Attorney?......maybe not!
davh12 4 1863
No New Posts Patent Regs regarding DOD careful all!
davh12 1 1450
No New Posts Recent Development of Rotorcraft Configuration
hesham 1 1671
No New Posts R. D. LEONI / United Aircraft Corporation convertiplane
555 1 1437
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