Method of making tubular metal blanks,申请号US19310522929-传众专利搜索

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发明名称	Method of making tubular metal blanks
摘要
申请公布号	US1854411(A)	申请公布日期	1932.04.19
申请号	US19310522929	申请日期	1931.03.16
申请人	WYCLIFFE LEIGHTON JOHN	发明人	LEIGHTON JOHN WYCLIFFE
分类号	B21C25/08	主分类号	B21C25/08
代理机构		代理人
主权项
地址

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