ROCK DRILL BIT WITH INSERTS,申请号CAD631619-传众专利搜索

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发明名称	ROCK DRILL BIT WITH INSERTS
摘要
申请公布号	CA631619(A)	申请公布日期	1961.11.28
申请号	CAD631619	申请日期
申请人	THE TIMKEN ROLLER BEARING COMPANY	发明人	JOHN B. BAKER
分类号		主分类号
代理机构		代理人
主权项
地址

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