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经营范围
发明名称
Apparat zur Wiedergabe von Tönen und bewegten Bildern.
摘要
申请公布号
CH147484(A)
申请公布日期
1931.06.15
申请号
CHD147484
申请日期
1929.12.05
申请人
VISIONTONE TALKING PICTURES LIMITED
发明人
LIMITED VISIONTONE TALKING PICTURES
分类号
主分类号
代理机构
代理人
主权项
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