CORE DRILLING TOOL,申请号SU19864166308-传众专利搜索

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发明名称	CORE DRILLING TOOL
摘要
申请公布号	SU1452927(A1)	申请公布日期	1989.01.23
申请号	SU19864166308	申请日期	1986.12.19
申请人	V PROEKTNO-IZYSKATELSKIJ NII "GIDROPROEKT" IM.S.YA.ZHUKA	发明人	GOLTSOV STANISLAV N,SU;CHEKMAREV ANATOLIJ B,SU
分类号	E21B25/00	主分类号	E21B25/00
代理机构		代理人
主权项
地址

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