Perfectionnements aux dispositifs de secret radiotéléphonique,申请号FRD992091-传众专利搜索

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发明名称	Perfectionnements aux dispositifs de secret radiotéléphonique
摘要
申请公布号	FR992091(A)	申请公布日期	1951.10.15
申请号	FRD992091	申请日期	1944.05.08
申请人	SOCIETE FRANCAISE RADIO-ELECTRIQUE	发明人
分类号	H04K1/04	主分类号	H04K1/04
代理机构		代理人
主权项
地址

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