Nouveau système d'expansion des contrastes pour les amplificateurs à basse fréquence destinés à la reproduction sonore,申请号FRD975278-传众专利搜索

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发明名称	Nouveau système d'expansion des contrastes pour les amplificateurs à basse fréquence destinés à la reproduction sonore
摘要
申请公布号	FR975278(A)	申请公布日期	1951.03.02
申请号	FRD975278	申请日期	1948.11.19
申请人		发明人	OLIVERES CHARLES;MAZE ROLAND
分类号	H03G7/02	主分类号	H03G7/02
代理机构		代理人
主权项
地址

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