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发明名称
Process of and apparatus for reproducing sounds recorded on sound films
摘要
申请公布号
GB333544(A)
申请公布日期
1930.08.13
申请号
GB19290004531
申请日期
1929.02.11
申请人
SELEN STUDIEN ERZEUGUNGS- U. VERWERTUNGS-GES. M.B.H.
发明人
分类号
G11B7/00
主分类号
G11B7/00
代理机构
代理人
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地址
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