ROCK DRILL BIT,申请号IE19840002375-传众专利搜索

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发明名称	ROCK DRILL BIT
摘要
申请公布号	IE842375(L)	申请公布日期	1985.03.20
申请号	IE19840002375	申请日期	1984.09.19
申请人	SANTRADE LTD	发明人
分类号	E21B10/36;E21B10/52;E21B10/56;(IPC1-7):E21B10/56	主分类号	E21B10/36
代理机构		代理人
主权项
地址

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