Régulateur de niveau pour circuits téléphoniques,申请号FRD1003571-传众专利搜索

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发明名称	Régulateur de niveau pour circuits téléphoniques
摘要
申请公布号	FR1003571(A)	申请公布日期	1952.03.19
申请号	FRD1003571	申请日期	1947.01.27
申请人		发明人	SUEUR RENE;MOLL PIERRE
分类号	H04B3/04	主分类号	H04B3/04
代理机构		代理人
主权项
地址

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