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Forum: Patents
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Stingray 0 1992
No New Posts Nicolas J. Medvedeff convertiplane and related patents
Stingray 1 1603
No New Posts Joseph S. Pecker Aircraft Having Sustaining Rotors
Stingray 0 771
No New Posts S. D. Robins combination airplane helicopter
Stingray 3 1575
No New Posts Durov Dmitry twin-boom tri tilt-rotor
Stingray 0 841
No New Posts Carter Allen Tall V/STOL aircraft
Leela25 2 812
No New Posts Variable chord morphing helicopter rotor
Leela25 0 767
No New Posts Gyrodyne patents
Stingray 14 2711
No New Posts Boeing
=hothorizon= 3 3007
No New Posts Zimmerman Helicopter flying apparatus
Stingray 3 1645
No New Posts Alberto Alvarez Calderon F. 3-rotor twin-boom VTOL aircraft
Stingray 0 1591
No New Posts Haviland Hull Platt's VTOL patents
Stingray 2 2341
No New Posts Douglas Model-828/A?
Stingray 0 1494
No New Posts Sikorsky helicopter-boat
Stingray 0 1537
No New Posts Weir Patents
Ross 0 1401
No New Posts Flying trucks from Handley-Page & Westland.
Ross 0 1568
No New Posts Piasecki patents
Stingray 1 1403
No New Posts Wilford tailsitter VTOL aircraft
Stingray 2 2447
No New Posts Andrew E. Friedrich Supersonic VTOL aircraft
Stingray 0 1297
No New Posts General Electric tail-sitter helicopter-airplane
Stingray 0 1205
No New Posts Henschel Helicopter, 1939
Stingray 0 1225
No New Posts Edward F. Andrews composite helicopter
Stingray 0 1233
No New Posts Dougals tandem rotor helicopter
hesham 0 1190
No New Posts John K. Sanders Aerodynamically stable VTOL aircraft
failcopter67 0 1193
No New Posts Firestone Tire a Rubber Company
=hothorizon= 3 1750
No New Posts Ishida TW-68 Tiltwing patent
Stingray 1 4109
No New Posts Do You Really Need a Patent Attorney?......maybe not!
davh12 4 2247
No New Posts Patent Regs regarding DOD careful all!
davh12 1 1801
No New Posts Recent Development of Rotorcraft Configuration
hesham 1 2000
No New Posts R. D. LEONI / United Aircraft Corporation convertiplane
555 1 1819
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