CUTTING ELEMENT FOR DRILL BITS,申请号EP19850850267-传众专利搜索

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发明名称	CUTTING ELEMENT FOR DRILL BITS
摘要
申请公布号	EP0177466(B1)	申请公布日期	1989.05.17
申请号	EP19850850267	申请日期	1985.08.28
申请人	STRATA BIT CORPORATION	发明人	DENNIS, MAHLON D.
分类号	E21B10/56;E21B10/567	主分类号	E21B10/56
代理机构		代理人
主权项
地址

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