Dispositif automatique d'appel et de transmission téléphonique de signaux de toute nature,申请号FRD822074-传众专利搜索

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发明名称	Dispositif automatique d'appel et de transmission téléphonique de signaux de toute nature
摘要
申请公布号	FR822074(A)	申请公布日期	1937.12.20
申请号	FRD822074	申请日期	1937.05.21
申请人		发明人	LAUERSDORF ALBINO OSCAR
分类号	H04M11/04	主分类号	H04M11/04
代理机构		代理人
主权项
地址

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