Apparatus for forming closed tubes,申请号US19400365313-传众专利搜索

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发明名称	Apparatus for forming closed tubes
摘要
申请公布号	US2309181(A)	申请公布日期	1943.01.26
申请号	US19400365313	申请日期	1940.11.12
申请人	THE IMPERIAL BRASS MANUFACTURING COMPANY	发明人	FRANCK GEORGE E.
分类号	B21D41/04;B21D51/00	主分类号	B21D41/04
代理机构		代理人
主权项
地址

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