Perfectionnements aux émetteurs et récepteurs d'acoustique sousmarine,申请号FRD840047-传众专利搜索

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发明名称	Perfectionnements aux émetteurs et récepteurs d'acoustique sousmarine
摘要
申请公布号	FR840047(A)	申请公布日期	1939.04.18
申请号	FRD840047	申请日期	1937.12.22
申请人	COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL	发明人
分类号	G10K11/00	主分类号	G10K11/00
代理机构		代理人
主权项
地址

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