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US3263999A
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Cards with selected window patterns and pack distinguishing indicia
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US2480871A
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Variable pitch propeller
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US2390547A
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Torque amplifier
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US2413028A
|
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Engine synchronizer
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US2542042A
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Integrated model airplane
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US2447023A
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Selective control mechanism for governor-controlled aircraft propellers
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US2367230A
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Controllable pitch-change mechanism for dual rotation propellers
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US2455378A
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Mechanism and controls for controllable aircraft propellers; complete propeller with automatic controls
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US2370675A
|
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Multiple stage means for changing pitch of aircraft propeller blades
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US2366739A
|
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Electrical jack
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US2437701A
|
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Aircraft propeller
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US2343918A
|
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Means for deicing propeller spinners
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US2399685A
|
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Differential speed responsive device
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US2378938A
|
|
Mechanism and controls for controllable aircraft propellers
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|
US2354392A
|
|
Integrated model airplane
|
|
US2388276A
|
|
Mechanism and control for controllable aircraft propellers
|
|
US2389161A
|
|
Controllable pitch change mechanism for dual rotation propellers
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|
US2297712A
|
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Integrated model airplane
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