Slip socket tool joint,申请号US19300441902-传众专利搜索

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发明名称	Slip socket tool joint
摘要
申请公布号	US1815660(A)	申请公布日期	1931.07.21
申请号	US19300441902	申请日期	1930.04.05
申请人	WALKER THOMAS M	发明人	WALKER THOMAS M.
分类号	E21B17/046	主分类号	E21B17/046
代理机构		代理人
主权项
地址

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