Drill bit wrench,申请号US19400327977-传众专利搜索

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发明名称	Drill bit wrench
摘要
申请公布号	US2283625(A)	申请公布日期	1942.05.19
申请号	US19400327977	申请日期	1940.04.05
申请人	COPLEN GEORGE H	发明人	COPLEN GEORGE H.
分类号	B25B13/48;B25B13/50	主分类号	B25B13/48
代理机构		代理人
主权项
地址

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