Perfectionnements aux relais de télégraphe polarisés,申请号FRD939863-传众专利搜索

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发明名称	Perfectionnements aux relais de télégraphe polarisés
摘要
申请公布号	FR939863(A)	申请公布日期	1948.11.26
申请号	FRD939863	申请日期	1947.01.21
申请人	TELEFON FABRIK AUTOMATIC A. S.	发明人
分类号	H01H51/22	主分类号	H01H51/22
代理机构		代理人
主权项
地址

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