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发明名称
Improvements in or relating to the synchronisation of sound records with moving picture films
摘要
申请公布号
GB335882(A)
申请公布日期
1930.09.25
申请号
GB19290009533
申请日期
1929.03.25
申请人
HAROLD GREEN;CELEBRITONE LIMITED
发明人
分类号
G03B31/00
主分类号
G03B31/00
代理机构
代理人
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地址
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