Perfectionnements aux systèmes électriques de transmission,申请号FRD718177-传众专利搜索

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发明名称	Perfectionnements aux systèmes électriques de transmission
摘要
申请公布号	FR718177(A)	申请公布日期	1932.01.20
申请号	FRD718177	申请日期	1931.06.05
申请人	ELECTRICAL RESEARCH PRODUCTS INC.	发明人
分类号	H04B3/20	主分类号	H04B3/20
代理机构		代理人
主权项
地址

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