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发明名称
Improved means for making records on gramophones
摘要
申请公布号
GB371935(A)
申请公布日期
1932.05.02
申请号
GB19310003046
申请日期
1931.01.30
申请人
HUGH PATRICK FAY
发明人
分类号
G11B3/36
主分类号
G11B3/36
代理机构
代理人
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