Variable hole circle drill head,申请号US19630275960-传众专利搜索

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发明名称	Variable hole circle drill head
摘要
申请公布号	US3203282(A)	申请公布日期	1965.08.31
申请号	US19630275960	申请日期	1963.04.26
申请人	CATERPILLAR TRACTOR CO.	发明人	WILSON CHARLES R.
分类号	B23B39/16	主分类号	B23B39/16
代理机构		代理人
主权项
地址

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