Winch,申请号US19460675220-传众专利搜索

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发明名称	Winch
摘要
申请公布号	US2563089(A)	申请公布日期	1951.08.07
申请号	US19460675220	申请日期	1946.06.07
申请人	HART WILSON JOHN	发明人	WILSON JOHN HART
分类号	E21B19/00	主分类号	E21B19/00
代理机构		代理人
主权项
地址

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