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发明名称
Improvements in combined sound and picture records on kinematograph positive films and in processes for the production thereof
摘要
申请公布号
GB378915(A)
申请公布日期
1932.08.19
申请号
GB19310014705
申请日期
1931.05.19
申请人
JOHN EDWARD THORNTON
发明人
分类号
G03C5/14
主分类号
G03C5/14
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