|
US1545560A
|
|
Airplane propeller
|
|
US1651821A
|
|
Aircraft-engine control
|
|
US1620968A
|
|
Propeller-blade mounting
|
|
GB202270A
|
|
Improvements in or relating to variable pitch propellers
|
|
GB215795A
|
|
Improvements in or relating to variable pitch propellers
|
|
US1576824A
|
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Variable-pitch propeller
|
|
US1589174A
|
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Variable-pitch propeller
|
|
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|
|
Propeller-blade mounting
|
|
US1554278A
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|
Variable-pitch propeller
|
|
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|
|
Adjustable and reversible propeller
|
|
GB144383A
|
|
Improvements in and relating to aerial propellers
|
|
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|
High-speed propeller
|
|
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Protector for propeller-blades
|
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|
Apparatus for making propellers
|
|
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|
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Apparatus for machining propeller-blades
|
|
US1363972A
|
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Apparatus for machining propeller-blades
|
