Improvements in electric phonograph,申请号GB19460011972-传众专利搜索

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发明名称	Improvements in electric phonograph
摘要
申请公布号	GB610981(A)	申请公布日期	1948.10.22
申请号	GB19460011972	申请日期	1946.04.18
申请人	DICTAPHONE CORPORATION	发明人
分类号		主分类号
代理机构		代理人
主权项
地址

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