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发明名称
An improvement in producing sound records on lenticular picture films
摘要
申请公布号
GB347044(A)
申请公布日期
1931.04.23
申请号
GB19300017246
申请日期
1930.06.04
申请人
I.G. FARBENINDUSTRIE AKTIENGESELLSCHAFT
发明人
分类号
G11B7/00
主分类号
G11B7/00
代理机构
代理人
主权项
地址
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