Improvements relating to the optical recording and reproduction of sound,申请号GB19320014283-传众专利搜索

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发明名称	Improvements relating to the optical recording and reproduction of sound
摘要
申请公布号	GB401376(A)	申请公布日期	1933.11.16
申请号	GB19320014283	申请日期	1932.05.19
申请人	SOUND IMPROVEMENTS LIMITED;ROBERT CLARK;ALBERT STANLEY ATTKINS	发明人
分类号	G11B7/00	主分类号	G11B7/00
代理机构		代理人
主权项
地址

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