APPARATUS FOR PLACING SESORS IN LARGE-DIAMETER WELLS,申请号SU19772551949-传众专利搜索

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发明名称	APPARATUS FOR PLACING SESORS IN LARGE-DIAMETER WELLS
摘要
申请公布号	SU768978(A1)	申请公布日期	1980.10.07
申请号	SU19772551949	申请日期	1977.12.06
申请人	SHCHUKIN EVGENIJ N,SU	发明人	SHCHUKIN EVGENIJ N,SU
分类号	E21C39/00;(IPC1-7):E21C39/00	主分类号	E21C39/00
代理机构		代理人
主权项
地址

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