|
US2466421A
|
|
Means for varying the buoyancy of lighter-than-air craft
|
|
US2450954A
|
|
Means for indicating the state of gas in cells of aircraft
|
|
US1941799A
|
|
Aircraft propelling and controlling mechanism
|
|
US1868976A
|
|
Aircraft propelling mechanism
|
|
US1868975A
|
|
Propeller drive mechanism
|
|
US1788430A
|
|
Aircraft-propelling mechanism
|
|
US1834614A
|
|
Air cell for aircraft
|
|
US1797502A
|
|
Aircraft
|
|
US1795335A
|
|
Dirigible construction
|
|
US1795334A
|
|
Aircraft
|
|
US1686084A
|
|
Aircraft
|
|
US1682961A
|
|
Pressure, temperature, and volume indicating and controlling means for aircraft
|
|
US1687204A
|
|
Gas-storage system for aircraft
|
|
US1681637A
|
|
Aircraft landing and housing device
|
|
US1547912A
|
|
Aircraft
|
|
US1687203A
|
|
Aircraft
|
|
US1686130A
|
|
Aircraft
|
|
US1470163A
|
|
Aircraft propeller
|
|
US1515037A
|
|
Aircraft
|
|
US1471656A
|
|
Aircraft
|
