Bit and cutter therefor,申请号US19460687768-传众专利搜索

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发明名称	Bit and cutter therefor
摘要
申请公布号	US2527838(A)	申请公布日期	1950.10.31
申请号	US19460687768	申请日期	1946.08.01
申请人	HUGHES TOOL COMPANY	发明人	MORLAN ERWIN A.;WOODS HENRY B.
分类号	E21B10/16	主分类号	E21B10/16
代理机构		代理人
主权项
地址

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