IMPREGNATED DIAMOND BIT,申请号USD3537538-传众专利搜索

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发明名称	IMPREGNATED DIAMOND BIT
摘要
申请公布号	US3537538(A)	申请公布日期	1970.11.03
申请号	USD3537538	申请日期	1969.05.21
申请人	CHRISTENSEN DIAMOND PRODUCTS CO.	发明人	ROBERT E. GENEROUX
分类号	E21B10/00;E21B10/48;(IPC1-7):E21B9/36	主分类号	E21B10/00
代理机构		代理人
主权项
地址

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