Slip for oil well tools,申请号US19390310809-传众专利搜索

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发明名称	Slip for oil well tools
摘要
申请公布号	US2204659(A)	申请公布日期	1940.06.18
申请号	US19390310809	申请日期	1939.12.23
申请人	BAKER OIL TOOLS, INC.	发明人	BURT CLARENCE E.
分类号	E21B33/129	主分类号	E21B33/129
代理机构		代理人
主权项
地址

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