Well casing aligning guide,申请号US19370182319-传众专利搜索

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发明名称	Well casing aligning guide
摘要
申请公布号	US2184051(A)	申请公布日期	1939.12.19
申请号	US19370182319	申请日期	1937.12.29
申请人	NATIONAL TUBE COMPANY	发明人	MOISE BOLTON C.
分类号	E21B19/00	主分类号	E21B19/00
代理机构		代理人
主权项
地址

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