Variable pitch propeller,申请号US19290397182-传众专利搜索

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发明名称	Variable pitch propeller
摘要
申请公布号	US1828348(A)	申请公布日期	1931.10.20
申请号	US19290397182	申请日期	1929.10.04
申请人	TURNBULL WALLACE R	发明人	TURNBULL WALLACE R.
分类号	B64C11/44	主分类号	B64C11/44
代理机构		代理人
主权项
地址

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