Perfectionnements apportés aux appareils téléphoniques automatiques ne fonctionnant qu'après y avoir introduit des objets,申请号FRD683328-传众专利搜索

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发明名称	Perfectionnements apportés aux appareils téléphoniques automatiques ne fonctionnant qu'après y avoir introduit des objets
摘要
申请公布号	FR683328(A)	申请公布日期	1930.06.11
申请号	FRD683328	申请日期	1929.10.15
申请人		发明人	LAPORTE ROGER-PIERRE-EMILE
分类号	H04M17/02	主分类号	H04M17/02
代理机构		代理人
主权项
地址

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