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Forum: Patents
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Stingray 0 1527
No New Posts Nicolas J. Medvedeff convertiplane and related patents
 
Stingray 1 450
No New Posts Joseph S. Pecker Aircraft Having Sustaining Rotors
 
Stingray 0 215
No New Posts S. D. Robins combination airplane helicopter
 
Stingray 3 936
No New Posts Durov Dmitry twin-boom tri tilt-rotor
 
Stingray 0 241
No New Posts Carter Allen Tall V/STOL aircraft
 
Leela25 2 298
No New Posts Variable chord morphing helicopter rotor
 
Leela25 0 193
No New Posts Gyrodyne patents
 
Stingray 14 1396
No New Posts Boeing
 
=hothorizon= 3 2020
No New Posts Zimmerman Helicopter flying apparatus
 
Stingray 3 1135
No New Posts Alberto Alvarez Calderon F. 3-rotor twin-boom VTOL aircraft
 
Stingray 0 1144
No New Posts Haviland Hull Platt's VTOL patents
 
Stingray 2 1337
No New Posts Douglas Model-828/A?
 
Stingray 0 1050
No New Posts Sikorsky helicopter-boat
 
Stingray 0 1074
No New Posts Weir Patents
 
Ross 0 998
No New Posts Flying trucks from Handley-Page & Westland.
 
Ross 0 1075
No New Posts Piasecki patents
 
Stingray 1 968
No New Posts Wilford tailsitter VTOL aircraft
 
Stingray 2 1914
No New Posts Andrew E. Friedrich Supersonic VTOL aircraft
 
Stingray 0 835
No New Posts General Electric tail-sitter helicopter-airplane
 
Stingray 0 785
No New Posts Henschel Helicopter, 1939
 
Stingray 0 768
No New Posts Edward F. Andrews composite helicopter
 
Stingray 0 786
No New Posts Dougals tandem rotor helicopter
 
hesham 0 718
No New Posts John K. Sanders Aerodynamically stable VTOL aircraft
 
failcopter67 0 777
No New Posts Firestone Tire a Rubber Company
 
=hothorizon= 3 1259
No New Posts Ishida TW-68 Tiltwing patent
 
Stingray 1 3367
No New Posts Do You Really Need a Patent Attorney?......maybe not!
 
davh12 4 1555
No New Posts Patent Regs regarding DOD contracts.........be careful all!
 
davh12 1 1247
No New Posts Recent Development of Rotorcraft Configuration
 
hesham 1 1509
No New Posts R. D. LEONI / United Aircraft Corporation convertiplane
 
555 1 1272
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