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Forum: Patents
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Stingray 0 2122
No New Posts Nicolas J. Medvedeff convertiplane and related patents
Stingray 1 1764
No New Posts Joseph S. Pecker Aircraft Having Sustaining Rotors
Stingray 0 877
No New Posts S. D. Robins combination airplane helicopter
Stingray 3 1684
No New Posts Durov Dmitry twin-boom tri tilt-rotor
Stingray 0 953
No New Posts Carter Allen Tall V/STOL aircraft
Leela25 2 914
No New Posts Variable chord morphing helicopter rotor
Leela25 0 888
No New Posts Gyrodyne patents
Stingray 14 2832
No New Posts Boeing
=hothorizon= 3 3155
No New Posts Zimmerman Helicopter flying apparatus
Stingray 3 1745
No New Posts Alberto Alvarez Calderon F. 3-rotor twin-boom VTOL aircraft
Stingray 0 1689
No New Posts Haviland Hull Platt's VTOL patents
Stingray 2 2485
No New Posts Douglas Model-828/A?
Stingray 0 1589
No New Posts Sikorsky helicopter-boat
Stingray 0 1644
No New Posts Weir Patents
Ross 0 1503
No New Posts Flying trucks from Handley-Page & Westland.
Ross 0 1664
No New Posts Piasecki patents
Stingray 1 1510
No New Posts Wilford tailsitter VTOL aircraft
Stingray 2 2553
No New Posts Andrew E. Friedrich Supersonic VTOL aircraft
Stingray 0 1398
No New Posts General Electric tail-sitter helicopter-airplane
Stingray 0 1294
No New Posts Henschel Helicopter, 1939
Stingray 0 1319
No New Posts Edward F. Andrews composite helicopter
Stingray 0 1327
No New Posts Dougals tandem rotor helicopter
hesham 0 1307
No New Posts John K. Sanders Aerodynamically stable VTOL aircraft
failcopter67 0 1289
No New Posts Firestone Tire a Rubber Company
=hothorizon= 3 1854
No New Posts Ishida TW-68 Tiltwing patent
Stingray 1 4216
No New Posts Do You Really Need a Patent Attorney?......maybe not!
davh12 4 2348
No New Posts Patent Regs regarding DOD careful all!
davh12 1 1913
No New Posts Recent Development of Rotorcraft Configuration
hesham 1 2102
No New Posts R. D. LEONI / United Aircraft Corporation convertiplane
555 1 1945
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