Method and machine for forming pipe from flat sheets,申请号US19480005924-传众专利搜索

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发明名称	Method and machine for forming pipe from flat sheets
摘要
申请公布号	US2515786(A)	申请公布日期	1950.07.18
申请号	US19480005924	申请日期	1948.02.03
申请人	DOROTHY M. CLIFFORD;KENNETH R. CLIFFORD	发明人	MITCHELL ARCH L.
分类号	B21D5/01	主分类号	B21D5/01
代理机构		代理人
主权项
地址

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