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发明名称
Vorzugsweise tischförmige Vorrichtung zum Umrollen und Betrachten bzw. Abhören von Bild- und Tonfilmen.
摘要
申请公布号
AT130775(B)
申请公布日期
1932.12.10
申请号
ATD130775
申请日期
1931.09.01
申请人
ALLGEMEINE ELEKTRICITAETS-GESELLSCHAFT
发明人
DR. ALBERT NARATH
分类号
G03B31/00
主分类号
G03B31/00
代理机构
代理人
主权项
地址
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