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经营范围
发明名称
Improved process for printing sound records on kinematograph films
摘要
申请公布号
GB378514(A)
申请公布日期
1932.08.15
申请号
GB19310014373
申请日期
1931.05.15
申请人
JOHN EDWARD THORNTON
发明人
分类号
G03C5/14
主分类号
G03C5/14
代理机构
代理人
主权项
地址
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