Valve control for dual-rotation propeller,申请号US19530380235-传众专利搜索

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发明名称	Valve control for dual-rotation propeller
摘要
申请公布号	US2791282(A)	申请公布日期	1957.05.07
申请号	US19530380235	申请日期	1953.09.15
申请人	UNITED AIRCRAFT CORPORATION	发明人	FREEMAN PHILIP M.
分类号	B64C11/30	主分类号	B64C11/30
代理机构		代理人
主权项
地址

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