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Forum: Patents
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Stingray 0 1590
No New Posts Nicolas J. Medvedeff convertiplane and related patents
Stingray 1 766
No New Posts Joseph S. Pecker Aircraft Having Sustaining Rotors
Stingray 0 298
No New Posts S. D. Robins combination airplane helicopter
Stingray 3 1000
No New Posts Durov Dmitry twin-boom tri tilt-rotor
Stingray 0 366
No New Posts Carter Allen Tall V/STOL aircraft
Leela25 2 382
No New Posts Variable chord morphing helicopter rotor
Leela25 0 249
No New Posts Gyrodyne patents
Stingray 14 1521
No New Posts Boeing
=hothorizon= 3 2242
No New Posts Zimmerman Helicopter flying apparatus
Stingray 3 1203
No New Posts Alberto Alvarez Calderon F. 3-rotor twin-boom VTOL aircraft
Stingray 0 1201
No New Posts Haviland Hull Platt's VTOL patents
Stingray 2 1535
No New Posts Douglas Model-828/A?
Stingray 0 1103
No New Posts Sikorsky helicopter-boat
Stingray 0 1125
No New Posts Weir Patents
Ross 0 1054
No New Posts Flying trucks from Handley-Page & Westland.
Ross 0 1135
No New Posts Piasecki patents
Stingray 1 1023
No New Posts Wilford tailsitter VTOL aircraft
Stingray 2 1977
No New Posts Andrew E. Friedrich Supersonic VTOL aircraft
Stingray 0 892
No New Posts General Electric tail-sitter helicopter-airplane
Stingray 0 833
No New Posts Henschel Helicopter, 1939
Stingray 0 844
No New Posts Edward F. Andrews composite helicopter
Stingray 0 858
No New Posts Dougals tandem rotor helicopter
hesham 0 774
No New Posts John K. Sanders Aerodynamically stable VTOL aircraft
failcopter67 0 822
No New Posts Firestone Tire a Rubber Company
=hothorizon= 3 1339
No New Posts Ishida TW-68 Tiltwing patent
Stingray 1 3574
No New Posts Do You Really Need a Patent Attorney?......maybe not!
davh12 4 1686
No New Posts Patent Regs regarding DOD careful all!
davh12 1 1302
No New Posts Recent Development of Rotorcraft Configuration
hesham 1 1561
No New Posts R. D. LEONI / United Aircraft Corporation convertiplane
555 1 1323
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