Appareil d'écoute des conversations téléphoniques,申请号FRD1024831-传众专利搜索

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发明名称	Appareil d'écoute des conversations téléphoniques
摘要
申请公布号	FR1024831(A)	申请公布日期	1953.04.07
申请号	FRD1024831	申请日期	1950.09.22
申请人	HANDELSVENNOOTSCHAP ONDER DE FIRMA TECHN. IMPORT-EXPORT EN FABRICAGE	发明人
分类号	H04M1/215	主分类号	H04M1/215
代理机构		代理人
主权项
地址

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