METHOD AND APPARATUS FOR ATTACHING A CASING TO A DRILL BIT IN OVERBURDEN DRILLING EQUIPMENT,申请号IL19970129610-传众专利搜索

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发明名称	METHOD AND APPARATUS FOR ATTACHING A CASING TO A DRILL BIT IN OVERBURDEN DRILLING EQUIPMENT
摘要
申请公布号	IL129610(A)	申请公布日期	2001.07.24
申请号	IL19970129610	申请日期	1997.11.05
申请人	SANDVIK AB	发明人
分类号	E21B7/20;E21B17/046;E21B17/14;(IPC1-7):E21B17/14	主分类号	E21B7/20
代理机构		代理人
主权项
地址

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