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发明名称
Improvements in or relating to combined sound and picture films
摘要
申请公布号
GB337151(A)
申请公布日期
1930.10.30
申请号
GB19290029381
申请日期
1929.09.27
申请人
SOMA PRISNER;EUGENE WENDER
发明人
分类号
G03B31/06
主分类号
G03B31/06
代理机构
代理人
主权项
地址
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