Well reamer,申请号US19340730223-传众专利搜索

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发明名称	Well reamer
摘要
申请公布号	US2071611(A)	申请公布日期	1937.02.23
申请号	US19340730223	申请日期	1934.06.12
申请人	GLOBE OIL TOOLS COMPANY	发明人	CATLAND ALFRED C.
分类号	E21B10/30	主分类号	E21B10/30
代理机构		代理人
主权项
地址

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