Multi-step drill,申请号US19530377326-传众专利搜索

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发明名称	Multi-step drill
摘要
申请公布号	US2832386(A)	申请公布日期	1958.04.29
申请号	US19530377326	申请日期	1953.08.31
申请人	VAN WOOD MANUFACTURING CO., INC.	发明人	DALEN LEONARD VAN
分类号	B23B51/10	主分类号	B23B51/10
代理机构		代理人
主权项
地址

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