Pipe nipple chuck,申请号US19480048800-传众专利搜索

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发明名称	Pipe nipple chuck
摘要
申请公布号	US2572418(A)	申请公布日期	1951.10.23
申请号	US19480048800	申请日期	1948.09.11
申请人	RIDGE TOOL COMPANY	发明人	WRIGHT CLYDE E.
分类号	B23B31/20	主分类号	B23B31/20
代理机构		代理人
主权项
地址

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