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Forum: Patents
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Stingray 0 1578
No New Posts Nicolas J. Medvedeff convertiplane and related patents
 
Stingray 1 702
No New Posts Joseph S. Pecker Aircraft Having Sustaining Rotors
 
Stingray 0 263
No New Posts S. D. Robins combination airplane helicopter
 
Stingray 3 982
No New Posts Durov Dmitry twin-boom tri tilt-rotor
 
Stingray 0 325
No New Posts Carter Allen Tall V/STOL aircraft
 
Leela25 2 351
No New Posts Variable chord morphing helicopter rotor
 
Leela25 0 233
No New Posts Gyrodyne patents
 
Stingray 14 1482
No New Posts Boeing
 
=hothorizon= 3 2157
No New Posts Zimmerman Helicopter flying apparatus
 
Stingray 3 1185
No New Posts Alberto Alvarez Calderon F. 3-rotor twin-boom VTOL aircraft
 
Stingray 0 1186
No New Posts Haviland Hull Platt's VTOL patents
 
Stingray 2 1483
No New Posts Douglas Model-828/A?
 
Stingray 0 1093
No New Posts Sikorsky helicopter-boat
 
Stingray 0 1114
No New Posts Weir Patents
 
Ross 0 1039
No New Posts Flying trucks from Handley-Page & Westland.
 
Ross 0 1123
No New Posts Piasecki patents
 
Stingray 1 1009
No New Posts Wilford tailsitter VTOL aircraft
 
Stingray 2 1961
No New Posts Andrew E. Friedrich Supersonic VTOL aircraft
 
Stingray 0 879
No New Posts General Electric tail-sitter helicopter-airplane
 
Stingray 0 820
No New Posts Henschel Helicopter, 1939
 
Stingray 0 808
No New Posts Edward F. Andrews composite helicopter
 
Stingray 0 848
No New Posts Dougals tandem rotor helicopter
 
hesham 0 761
No New Posts John K. Sanders Aerodynamically stable VTOL aircraft
 
failcopter67 0 809
No New Posts Firestone Tire a Rubber Company
 
=hothorizon= 3 1316
No New Posts Ishida TW-68 Tiltwing patent
 
Stingray 1 3533
No New Posts Do You Really Need a Patent Attorney?......maybe not!
 
davh12 4 1636
No New Posts Patent Regs regarding DOD contracts.........be careful all!
 
davh12 1 1288
No New Posts Recent Development of Rotorcraft Configuration
 
hesham 1 1550
No New Posts R. D. LEONI / United Aircraft Corporation convertiplane
 
555 1 1311
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