DEVICE FOR SECTIONWISE INTRODUCING CASING TUBES INTO A BORE-HOLE,申请号PL19850256591-传众专利搜索

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发明名称	DEVICE FOR SECTIONWISE INTRODUCING CASING TUBES INTO A BORE-HOLE
摘要
申请公布号	PL150049(B1)	申请公布日期	1990.04.30
申请号	PL19850256591	申请日期	1985.12.02
申请人		发明人
分类号	E21B;E21B17/04;(IPC1-7):E21B17/04	主分类号	E21B
代理机构		代理人
主权项
地址

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