Improvements in and relating to date indicators in combination with paper-weights or other articles,申请号GB19300008521-传众专利搜索

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发明名称	Improvements in and relating to date indicators in combination with paper-weights or other articles
摘要
申请公布号	GB343349(A)	申请公布日期	1931.02.19
申请号	GB19300008521	申请日期	1930.03.17
申请人	ERNEST SPARKS	发明人
分类号	G09D3/06	主分类号	G09D3/06
代理机构		代理人
主权项
地址

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