Perfectionnements aux récepteurs téléphoniques portatifs,申请号FR19630956740-传众专利搜索

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发明名称	Perfectionnements aux récepteurs téléphoniques portatifs
摘要
申请公布号	FR1377071(A)	申请公布日期	1964.10.31
申请号	FR19630956740	申请日期	1963.12.11
申请人	S. G. BROWN LIMITED	发明人
分类号	A42B3/30;H04M1/05	主分类号	A42B3/30
代理机构		代理人
主权项
地址

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