STUDDED CUTTING TIP FOR DRILLING ROCK,申请号GB19750022595-传众专利搜索

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发明名称	STUDDED CUTTING TIP FOR DRILLING ROCK
摘要
申请公布号	GB1506239(A)	申请公布日期	1978.04.05
申请号	GB19750022595	申请日期	1975.05.23
申请人	UGINE ACIERS	发明人
分类号	E21B4/14;E21B10/38;E21B10/56;E21B21/16;(IPC1-7):E21B9/02	主分类号	E21B4/14
代理机构		代理人
主权项
地址

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