METHOD OF FORMING LOCK WASHERS BY ROLLING MULTIPLE SECTIONS FROM A SINGLE ROD,申请号USD3461471-传众专利搜索

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发明名称	METHOD OF FORMING LOCK WASHERS BY ROLLING MULTIPLE SECTIONS FROM A SINGLE ROD
摘要
申请公布号	US3461471(A)	申请公布日期	1969.08.19
申请号	USD3461471	申请日期	1967.04.03
申请人	CHARLES N. MELLOWES	发明人	CHARLES N. MELLOWES
分类号	B21D53/20;(IPC1-7):B21D53/20;B23P17/00	主分类号	B21D53/20
代理机构		代理人
主权项
地址

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