Improvements in extrusion device and process,申请号GB19490004791-传众专利搜索

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发明名称	Improvements in extrusion device and process
摘要
申请公布号	GB660236(A)	申请公布日期	1951.10.31
申请号	GB19490004791	申请日期	1949.02.22
申请人	THE BRITISH TABULATING MACHINE COMPANY LIMITED	发明人
分类号	B21C23/22	主分类号	B21C23/22
代理机构		代理人
主权项
地址

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