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发明名称
Improvements in and relating to sound record film driving mechanism
摘要
申请公布号
GB355236(A)
申请公布日期
1931.08.19
申请号
GB19300005568
申请日期
1930.02.19
申请人
THE BRITISH THOMSON-HOUSTON COMPANY LIMITED
发明人
分类号
G11B15/26
主分类号
G11B15/26
代理机构
代理人
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