Variable pitch propeller,申请号US19480064628-传众专利搜索

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发明名称	Variable pitch propeller
摘要
申请公布号	US2536546(A)	申请公布日期	1951.01.02
申请号	US19480064628	申请日期	1948.12.10
申请人	J. STONE & COMPANY LIMITED	发明人	HATCHER ERNEST CHARLES
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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