Improvements in and relating to sound recording apparatus,申请号GB19310008673-传众专利搜索

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发明名称	Improvements in and relating to sound recording apparatus
摘要
申请公布号	GB377250(A)	申请公布日期	1932.07.20
申请号	GB19310008673	申请日期	1931.03.20
申请人	THE BRITISH THOMSON-HOUSTON COMPANY, LIMITED	发明人
分类号	A63G27/00;G07F17/30	主分类号	A63G27/00
代理机构		代理人
主权项
地址

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