DOWEL HOLE DRILLING AND SPACING DEVICE,申请号USD3557641-传众专利搜索

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发明名称	DOWEL HOLE DRILLING AND SPACING DEVICE
摘要
申请公布号	US3557641(A)	申请公布日期	1971.01.26
申请号	USD3557641	申请日期	1968.09.12
申请人	HOWARD V. SCHWANDT	发明人	HOWARD V. SCHWANDT
分类号	B23B47/00;B27C3/06;(IPC1-7):B23B47/28	主分类号	B23B47/00
代理机构		代理人
主权项
地址

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