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Forum: Patents
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Stingray 0 1573
No New Posts Nicolas J. Medvedeff convertiplane and related patents
 
Stingray 1 639
No New Posts Joseph S. Pecker Aircraft Having Sustaining Rotors
 
Stingray 0 256
No New Posts S. D. Robins combination airplane helicopter
 
Stingray 3 979
No New Posts Durov Dmitry twin-boom tri tilt-rotor
 
Stingray 0 300
No New Posts Carter Allen Tall V/STOL aircraft
 
Leela25 2 343
No New Posts Variable chord morphing helicopter rotor
 
Leela25 0 231
No New Posts Gyrodyne patents
 
Stingray 14 1462
No New Posts Boeing
 
=hothorizon= 3 2120
No New Posts Zimmerman Helicopter flying apparatus
 
Stingray 3 1179
No New Posts Alberto Alvarez Calderon F. 3-rotor twin-boom VTOL aircraft
 
Stingray 0 1179
No New Posts Haviland Hull Platt's VTOL patents
 
Stingray 2 1447
No New Posts Douglas Model-828/A?
 
Stingray 0 1089
No New Posts Sikorsky helicopter-boat
 
Stingray 0 1105
No New Posts Weir Patents
 
Ross 0 1033
No New Posts Flying trucks from Handley-Page & Westland.
 
Ross 0 1117
No New Posts Piasecki patents
 
Stingray 1 1003
No New Posts Wilford tailsitter VTOL aircraft
 
Stingray 2 1957
No New Posts Andrew E. Friedrich Supersonic VTOL aircraft
 
Stingray 0 875
No New Posts General Electric tail-sitter helicopter-airplane
 
Stingray 0 815
No New Posts Henschel Helicopter, 1939
 
Stingray 0 801
No New Posts Edward F. Andrews composite helicopter
 
Stingray 0 845
No New Posts Dougals tandem rotor helicopter
 
hesham 0 753
No New Posts John K. Sanders Aerodynamically stable VTOL aircraft
 
failcopter67 0 804
No New Posts Firestone Tire a Rubber Company
 
=hothorizon= 3 1312
No New Posts Ishida TW-68 Tiltwing patent
 
Stingray 1 3517
No New Posts Do You Really Need a Patent Attorney?......maybe not!
 
davh12 4 1614
No New Posts Patent Regs regarding DOD contracts.........be careful all!
 
davh12 1 1283
No New Posts Recent Development of Rotorcraft Configuration
 
hesham 1 1545
No New Posts R. D. LEONI / United Aircraft Corporation convertiplane
 
555 1 1308
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