OPTIMIZING ROCK DRILLING,申请号GB19850012776-传众专利搜索

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发明名称	OPTIMIZING ROCK DRILLING
摘要
申请公布号	GB8512776(D0)	申请公布日期	1985.06.26
申请号	GB19850012776	申请日期	1985.05.21
申请人	TAMPELLA AB OY	发明人
分类号	E21B49/00;E21B1/00;E21B44/00;E21B44/02	主分类号	E21B49/00
代理机构		代理人
主权项
地址

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