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发明名称
Improvements in or relating to talking picture mechanism
摘要
申请公布号
GB353954(A)
申请公布日期
1931.08.06
申请号
GB19300013463
申请日期
1930.05.01
申请人
HORACE LYITLETON VINCENT DAY;ERIC HARCOUT DAY
发明人
分类号
G03B31/00
主分类号
G03B31/00
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