APPLIANCE FOR DRILLING HARD ROCKS,申请号CS19770005309-传众专利搜索

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发明名称	APPLIANCE FOR DRILLING HARD ROCKS
摘要
申请公布号	CS213569(B1)	申请公布日期	1982.04.09
申请号	CS19770005309	申请日期	1977.08.11
申请人	SMIDA,LADISLAV,CS	发明人	SMIDA,LADISLAV,CS
分类号	E21B4/02;(IPC1-7):E21B4/02	主分类号	E21B4/02
代理机构		代理人
主权项
地址

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