Tools for cutting heads,申请号GB19790039525-传众专利搜索

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发明名称	Tools for cutting heads
摘要
申请公布号	GB2035417(A)	申请公布日期	1980.06.18
申请号	GB19790039525	申请日期	1979.11.15
申请人	HALL & PICKLES LTD	发明人
分类号	E21B10/12;E21B10/20;E21C35/18;E21C35/183;E21D9/10;(IPC1-7):E21C35/18	主分类号	E21B10/12
代理机构		代理人
主权项
地址

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