Method of simultaneously deforming two overlapping tubular metal elements to form interlocking ridges,申请号US19650455556-传众专利搜索

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发明名称	Method of simultaneously deforming two overlapping tubular metal elements to form interlocking ridges
摘要
申请公布号	US3290770(A)	申请公布日期	1966.12.13
申请号	US19650455556	申请日期	1965.05.13
申请人	DANIEL SILVERMAN;LANG HAROLD M	发明人	SILVERMAN DANIEL;LANG HAROLD M.
分类号	B21D39/04	主分类号	B21D39/04
代理机构		代理人
主权项
地址

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