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发明名称
Improvements in the reproduction of sound films
摘要
申请公布号
GB435474(A)
申请公布日期
1935.09.23
申请号
GB19340009172
申请日期
1934.03.23
申请人
I. G. FARBENINDUSTRIE AKTIENGESELLSCHAFT
发明人
分类号
G03C5/14
主分类号
G03C5/14
代理机构
代理人
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