Systèmes de communication électrique,申请号FRD841940-传众专利搜索

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发明名称	Systèmes de communication électrique
摘要
申请公布号	FR841940(A)	申请公布日期	1939.06.01
申请号	FRD841940	申请日期	1938.08.09
申请人	LE MATERIEL TELEPHONIQUE	发明人
分类号	H04B3/04	主分类号	H04B3/04
代理机构		代理人
主权项
地址

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