Téléphone à haut-parleur et dispositif pour ce téléphone,申请号FRD843838-传众专利搜索

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发明名称	Téléphone à haut-parleur et dispositif pour ce téléphone
摘要
申请公布号	FR843838(A)	申请公布日期	1939.07.11
申请号	FRD843838	申请日期	1938.09.23
申请人		发明人	NIEDERLINSKI WLADYSLAW;GOTTREICH CHASKIEL;GROSS SELIG
分类号	H04M1/60	主分类号	H04M1/60
代理机构		代理人
主权项
地址

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