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经营范围
发明名称
Dispositif de guidage et d'entraînement de films sono-visuels ou sonores, comportant un galet tendeur de film
摘要
申请公布号
FR50080(E)
申请公布日期
1939.11.20
申请号
FRD50080
申请日期
1938.12.08
申请人
KLANGFILM GESELLSCHAFT MIT BESCHRANKTER HAFTUNG
发明人
分类号
G03B31/02
主分类号
G03B31/02
代理机构
代理人
主权项
地址
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