Improvements in and relating to film driving means for use in sound recording or reproducing apparatus,申请号GB19290028320-传众专利搜索

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发明名称	Improvements in and relating to film driving means for use in sound recording or reproducing apparatus
摘要
申请公布号	GB319246(A)	申请公布日期	1930.12.18
申请号	GB19290028320	申请日期	1929.09.18
申请人	THE BRITISH THOMSON-HOUSTON COMPANY, LIMITED	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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