Variable pitch propeller,申请号US19320599609-传众专利搜索

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发明名称	Variable pitch propeller
摘要
申请公布号	US1894048(A)	申请公布日期	1933.01.10
申请号	US19320599609	申请日期	1932.03.18
申请人	A. J. O'BRIEN	发明人	LILLEY DANIEL G.
分类号	B64C11/42	主分类号	B64C11/42
代理机构		代理人
主权项
地址

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