INITIAL DRILLING CONTROL METHOD OF ROCK DRILL,申请号KR19970011512-传众专利搜索

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发明名称	INITIAL DRILLING CONTROL METHOD OF ROCK DRILL
摘要
申请公布号	KR100204210(B1)	申请公布日期	1999.06.15
申请号	KR19970011512	申请日期	1997.03.29
申请人	DAINONG HEAVY INDUSTRIES INC.	发明人	PARK, JAE-HWA
分类号	E21B7/24;(IPC1-7):E21B7/24	主分类号	E21B7/24
代理机构		代理人
主权项
地址

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