Perfectionnements aux combinés téléphoniques,申请号FRD975644-传众专利搜索

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发明名称	Perfectionnements aux combinés téléphoniques
摘要
申请公布号	FR975644(A)	申请公布日期	1951.03.07
申请号	FRD975644	申请日期	1946.01.09
申请人	INTERNATIONAL STANDARD ELECTRIC CORPORATION	发明人	MCLARN ERNEST STEWART
分类号	H04M1/03;H04R1/06	主分类号	H04M1/03
代理机构		代理人
主权项
地址

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