Procédé et appareil servant à la transmission, l'enregistrement et la reproduction de courants de signaux modulés,申请号FRD825240-传众专利搜索

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发明名称	Procédé et appareil servant à la transmission, l'enregistrement et la reproduction de courants de signaux modulés
摘要
申请公布号	FR825240(A)	申请公布日期	1938.02.25
申请号	FRD825240	申请日期	1937.08.05
申请人	ELECTRICAL RESEARCH PRODUCTS INC.	发明人
分类号	H04B1/62	主分类号	H04B1/62
代理机构		代理人
主权项
地址

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