Improvements in or relating to expanding files for papers and the like,申请号GB19570037218-传众专利搜索

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发明名称	Improvements in or relating to expanding files for papers and the like
摘要
申请公布号	GB830204(A)	申请公布日期	1960.03.09
申请号	GB19570037218	申请日期	1957.11.29
申请人	MANFRED HOERSTER	发明人
分类号	B42F21/06	主分类号	B42F21/06
代理机构		代理人
主权项
地址

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