Method of freeing and recovering pipe from wells,申请号US19370136543-传众专利搜索

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法人/股东/高管

发明名称	Method of freeing and recovering pipe from wells
摘要
申请公布号	US2139076(A)	申请公布日期	1938.12.06
申请号	US19370136543	申请日期	1937.04.13
申请人	GATES PAUL G	发明人	GATES PAUL G.
分类号	E21B31/03;E21B31/107	主分类号	E21B31/03
代理机构		代理人
主权项
地址

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