Dispositif d'attente pour des centraux téléphoniques automatiques,申请号FRD1071312-传众专利搜索

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发明名称	Dispositif d'attente pour des centraux téléphoniques automatiques
摘要
申请公布号	FR1071312(A)	申请公布日期	1954.08.30
申请号	FRD1071312	申请日期	1952.12.17
申请人	TELEFONAKTIEBOLAGET L M ERICSSON	发明人
分类号	C07D213/81;C07D213/82;H04M3/523;H04Q3/00	主分类号	C07D213/81
代理机构		代理人
主权项
地址

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