Perfectionnements aux systèmes de signalisation,申请号FRD929395-传众专利搜索

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发明名称	Perfectionnements aux systèmes de signalisation
摘要
申请公布号	FR929395(A)	申请公布日期	1947.12.24
申请号	FRD929395	申请日期	1946.06.07
申请人	LE MATERIEL TELEPHONIQUE	发明人	LALANDE MARC-ANDRE
分类号	H04B3/14	主分类号	H04B3/14
代理机构		代理人
主权项
地址

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