BIT FOR ROTARY-PERCUSSIVE DRILLING,申请号SU19874286997-传众专利搜索

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发明名称	BIT FOR ROTARY-PERCUSSIVE DRILLING
摘要
申请公布号	SU1537791(A1)	申请公布日期	1990.01.23
申请号	SU19874286997	申请日期	1987.07.20
申请人	VNI PI TUGOPLAVKIKH METALL	发明人	SINTSOV EVGENIJ A,SU;GRITSENKO VLADIMIR F,SU;TOROPTSEV NIKOLAJ G,SU;PESKOV BORIS A,SU;ASTAFEV VALERIJ V,SU;GOLDMAN EFIM L,SU;MALUKHIN NIKOLAJ G,SU;TSIFERBLAT VALENTIN L,SU
分类号	E21B10/36	主分类号	E21B10/36
代理机构		代理人
主权项
地址

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