Improvements in devices for recording transmitting and reproducing sounds,申请号GB19310032435-传众专利搜索

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发明名称	Improvements in devices for recording transmitting and reproducing sounds
摘要
申请公布号	GB382100(A)	申请公布日期	1932.10.20
申请号	GB19310032435	申请日期	1931.11.23
申请人	GEORGES MABBOUX	发明人
分类号	H03G9/00	主分类号	H03G9/00
代理机构		代理人
主权项
地址

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