Extrusion of metals of hollow section,申请号US19620231394-传众专利搜索

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发明名称	Extrusion of metals of hollow section
摘要
申请公布号	US3172536(A)	申请公布日期	1965.03.09
申请号	US19620231394	申请日期	1962.10.18
申请人	YORKSHIRE IMPERIAL METALS LIMITED	发明人	CAIRNS JOHN H.
分类号	B21C23/08;B21C23/32	主分类号	B21C23/08
代理机构		代理人
主权项
地址

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