Controllable pitch propeller hub,申请号US19320629854-传众专利搜索

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发明名称	Controllable pitch propeller hub
摘要
申请公布号	US1977077(A)	申请公布日期	1934.10.16
申请号	US19320629854	申请日期	1932.08.22
申请人	EDWARD A. WILKE;MAE V. WILKE	发明人	MARTENS FRED J.;THOMPSON CLINTON O.
分类号	B63H3/04	主分类号	B63H3/04
代理机构		代理人
主权项
地址

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