Circuits comportant des tubes à vide ou analogues,申请号FRD823397-传众专利搜索

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发明名称	Circuits comportant des tubes à vide ou analogues
摘要
申请公布号	FR823397(A)	申请公布日期	1938.01.19
申请号	FRD823397	申请日期	1936.09.28
申请人	LE MATERIEL TELEPHONIQUE	发明人
分类号	H01J7/24	主分类号	H01J7/24
代理机构		代理人
主权项
地址

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