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US3010675A
|
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Jet-powered ejector rotorless convertible aircraft
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US2959374A
|
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Jet-powered rotorless convertible aircraft
|
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US2915129A
|
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Jet-powered helicopter rotor head and blade construction
|
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US2690886A
|
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Control for jet-powered convertible aircraft
|
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US2756007A
|
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Jet-powered convertible aircraft
|
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US2552008A
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Jet-powered rotor system for helicopters
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US2667227A
|
|
Variable speed counter-rotating rotor system for helicopters and control means therefor
|
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US2625228A
|
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Automatic blade angle control for helicopters
|
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US2625227A
|
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Pitch change means for helicopter rotors
|
|
US2614790A
|
|
Quick-closing substantially balanced gate valve
|
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US2434276A
|
|
Tiltable counter-rotating rotor system for helicopters and control means therefor
|
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US2009780A
|
|
Centrifugal variable thrust mechanism
|
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US2079217A
|
|
Auto-cyclo-giro
|
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US1953964A
|
|
Centrifugal variable thrust mechanism
|
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US1972780A
|
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Balanced variable delivery pump or blower
|
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US1872758A
|
|
Variable thrust mechanism
|
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US1953963A
|
|
Balanced variable thrust propeller construction
|
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US1839683A
|
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Balanced wedge check valve
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US1418082A
|
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Automatic safety gas shut-off
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