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Forum: Patents
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Stingray 0 1565
No New Posts Nicolas J. Medvedeff convertiplane and related patents
Stingray 1 575
No New Posts Joseph S. Pecker Aircraft Having Sustaining Rotors
Stingray 0 247
No New Posts S. D. Robins combination airplane helicopter
Stingray 3 967
No New Posts Durov Dmitry twin-boom tri tilt-rotor
Stingray 0 283
No New Posts Carter Allen Tall V/STOL aircraft
Leela25 2 336
No New Posts Variable chord morphing helicopter rotor
Leela25 0 224
No New Posts Gyrodyne patents
Stingray 14 1446
No New Posts Boeing
=hothorizon= 3 2090
No New Posts Zimmerman Helicopter flying apparatus
Stingray 3 1172
No New Posts Alberto Alvarez Calderon F. 3-rotor twin-boom VTOL aircraft
Stingray 0 1171
No New Posts Haviland Hull Platt's VTOL patents
Stingray 2 1398
No New Posts Douglas Model-828/A?
Stingray 0 1081
No New Posts Sikorsky helicopter-boat
Stingray 0 1100
No New Posts Weir Patents
Ross 0 1027
No New Posts Flying trucks from Handley-Page & Westland.
Ross 0 1108
No New Posts Piasecki patents
Stingray 1 998
No New Posts Wilford tailsitter VTOL aircraft
Stingray 2 1950
No New Posts Andrew E. Friedrich Supersonic VTOL aircraft
Stingray 0 863
No New Posts General Electric tail-sitter helicopter-airplane
Stingray 0 808
No New Posts Henschel Helicopter, 1939
Stingray 0 795
No New Posts Edward F. Andrews composite helicopter
Stingray 0 840
No New Posts Dougals tandem rotor helicopter
hesham 0 746
No New Posts John K. Sanders Aerodynamically stable VTOL aircraft
failcopter67 0 796
No New Posts Firestone Tire a Rubber Company
=hothorizon= 3 1306
No New Posts Ishida TW-68 Tiltwing patent
Stingray 1 3497
No New Posts Do You Really Need a Patent Attorney?......maybe not!
davh12 4 1592
No New Posts Patent Regs regarding DOD careful all!
davh12 1 1276
No New Posts Recent Development of Rotorcraft Configuration
hesham 1 1538
No New Posts R. D. LEONI / United Aircraft Corporation convertiplane
555 1 1302
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