ROTARY BORING DRILL BIT,申请号CAD666822-传众专利搜索

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发明名称	ROTARY BORING DRILL BIT
摘要
申请公布号	CA666822(A)	申请公布日期	1963.07.16
申请号	CAD666822	申请日期
申请人	TIDWELL BIT DEVELOPMENT LTD.	发明人	THOMAS A. TIDWELL
分类号		主分类号
代理机构		代理人
主权项
地址

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