STRING OF TOOLS FOR DRILLING WITH CORE TAKING,申请号SU19752173735-传众专利搜索

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发明名称	STRING OF TOOLS FOR DRILLING WITH CORE TAKING
摘要
申请公布号	SU612002(A1)	申请公布日期	1978.06.25
申请号	SU19752173735	申请日期	1975.09.18
申请人	VNII BUROVOJ TEKHNIKI	发明人	EDELMAN YAKOV A,SU;POLSHKOV VLADIMIR K,SU;VOROZHBITOV MARAT ,SU;BERGSHTEJN OLEG YU,SU
分类号	E21B25/00;E21B21/00;(IPC1-7):E21B25/00	主分类号	E21B25/00
代理机构		代理人
主权项
地址

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