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发明名称
UEberwachungsvorrichtung fuer die Laufzeit des Filmbandes bei Bildprojektoren
摘要
申请公布号
DE809372(C)
申请公布日期
1951.07.30
申请号
DE1949P039251
申请日期
1949.04.08
申请人
WOLDT KARL-HEINZ
发明人
WOLDT KARL-HEINZ
分类号
G03B21/43
主分类号
G03B21/43
代理机构
代理人
主权项
地址
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