Perfectionnements aux appareils et méthodes pour remédier à la diaphonie,申请号FRD781496-传众专利搜索

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发明名称	Perfectionnements aux appareils et méthodes pour remédier à la diaphonie
摘要
申请公布号	FR781496(A)	申请公布日期	1935.05.16
申请号	FRD781496	申请日期	1934.10.17
申请人	LE MATERIEL TELEPHONIQUE, SOCIETE ANONYME	发明人
分类号	H04B3/32	主分类号	H04B3/32
代理机构		代理人
主权项
地址

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