Improvements in and relating to an indicator of telephone fees,申请号GB19570021689-传众专利搜索

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发明名称	Improvements in and relating to an indicator of telephone fees
摘要
申请公布号	GB827554(A)	申请公布日期	1960.02.10
申请号	GB19570021689	申请日期	1957.07.09
申请人	SODECO SOCIETE DES COMPTEURS DE GENEVE	发明人
分类号	H04M15/28	主分类号	H04M15/28
代理机构		代理人
主权项
地址

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