Sourdine pour combinés téléphoniques,申请号FRD690595-传众专利搜索

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发明名称	Sourdine pour combinés téléphoniques
摘要
申请公布号	FR690595(A)	申请公布日期	1930.09.23
申请号	FRD690595	申请日期	1929.05.03
申请人		发明人	CONTI JAMES-TIBURCE-FELIX
分类号	H04M1/19	主分类号	H04M1/19
代理机构		代理人
主权项
地址

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