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发明名称
Improvements in or relating to talking motion picture apparatus
摘要
申请公布号
GB343004(A)
申请公布日期
1931.02.09
申请号
GB19290030365
申请日期
1929.10.07
申请人
ANDREW LE ROY CHIPMAN
发明人
分类号
G03B31/00
主分类号
G03B31/00
代理机构
代理人
主权项
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