Improvements in or relating to signals or indicating devices for the cards or sheetsof card indexes or the like,申请号GB19440000370-传众专利搜索

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发明名称	Improvements in or relating to signals or indicating devices for the cards or sheetsof card indexes or the like
摘要
申请公布号	GB570517(A)	申请公布日期	1945.07.10
申请号	GB19440000370	申请日期	1944.01.07
申请人	ERIC VAUCHER	发明人
分类号	B42F21/04	主分类号	B42F21/04
代理机构		代理人
主权项
地址

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