Chuck and tool holding device,申请号US19400344966-传众专利搜索

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发明名称	Chuck and tool holding device
摘要
申请公布号	US2258377(A)	申请公布日期	1941.10.07
申请号	US19400344966	申请日期	1940.07.11
申请人	COLLINS JOHN C	发明人	COLLINS JOHN C.
分类号	B23B31/117;B23B51/12;B23Q3/12	主分类号	B23B31/117
代理机构		代理人
主权项
地址

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