ROLLER-CUTTER DRILLING BIT,申请号SU19894740036-传众专利搜索

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发明名称	ROLLER-CUTTER DRILLING BIT
摘要
申请公布号	SU1700189(A1)	申请公布日期	1991.12.23
申请号	SU19894740036	申请日期	1989.05.15
申请人	MO I NEFTI GAZA IM.I.M.GUBKINA	发明人	PETROV VLADIMIR F,SU;SLYADNEV MIKHAIL A,SU;MIKHIN NIKOLAJ M,SU
分类号	E21B10/22	主分类号	E21B10/22
代理机构		代理人
主权项
地址

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