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Forum: Patents
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Stingray 0 2075
No New Posts Nicolas J. Medvedeff convertiplane and related patents
Stingray 1 1733
No New Posts Joseph S. Pecker Aircraft Having Sustaining Rotors
Stingray 0 839
No New Posts S. D. Robins combination airplane helicopter
Stingray 3 1641
No New Posts Durov Dmitry twin-boom tri tilt-rotor
Stingray 0 913
No New Posts Carter Allen Tall V/STOL aircraft
Leela25 2 880
No New Posts Variable chord morphing helicopter rotor
Leela25 0 847
No New Posts Gyrodyne patents
Stingray 14 2789
No New Posts Boeing
=hothorizon= 3 3109
No New Posts Zimmerman Helicopter flying apparatus
Stingray 3 1708
No New Posts Alberto Alvarez Calderon F. 3-rotor twin-boom VTOL aircraft
Stingray 0 1650
No New Posts Haviland Hull Platt's VTOL patents
Stingray 2 2440
No New Posts Douglas Model-828/A?
Stingray 0 1556
No New Posts Sikorsky helicopter-boat
Stingray 0 1605
No New Posts Weir Patents
Ross 0 1469
No New Posts Flying trucks from Handley-Page & Westland.
Ross 0 1633
No New Posts Piasecki patents
Stingray 1 1474
No New Posts Wilford tailsitter VTOL aircraft
Stingray 2 2514
No New Posts Andrew E. Friedrich Supersonic VTOL aircraft
Stingray 0 1359
No New Posts General Electric tail-sitter helicopter-airplane
Stingray 0 1263
No New Posts Henschel Helicopter, 1939
Stingray 0 1286
No New Posts Edward F. Andrews composite helicopter
Stingray 0 1294
No New Posts Dougals tandem rotor helicopter
hesham 0 1270
No New Posts John K. Sanders Aerodynamically stable VTOL aircraft
failcopter67 0 1258
No New Posts Firestone Tire a Rubber Company
=hothorizon= 3 1818
No New Posts Ishida TW-68 Tiltwing patent
Stingray 1 4178
No New Posts Do You Really Need a Patent Attorney?......maybe not!
davh12 4 2312
No New Posts Patent Regs regarding DOD careful all!
davh12 1 1874
No New Posts Recent Development of Rotorcraft Configuration
hesham 1 2071
No New Posts R. D. LEONI / United Aircraft Corporation convertiplane
555 1 1908
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