Well tool construction,申请号US19360074165-传众专利搜索

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发明名称	Well tool construction
摘要
申请公布号	US2111751(A)	申请公布日期	1938.03.22
申请号	US19360074165	申请日期	1936.04.13
申请人	GLOBE OIL TOOLS COMPANY	发明人	CATLAND ALFRED C.
分类号	E21B10/06;E21B10/22	主分类号	E21B10/06
代理机构		代理人
主权项
地址

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