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发明名称
Filmplanhalter bei optischen Bildwerfern
摘要
申请公布号
DE888014(C)
申请公布日期
1953.08.27
申请号
DE1951F005387
申请日期
1951.01.11
申请人
FRIESEKE & HOEPFNER G.M.B.H.
发明人
LEHMANN KURT;HELLMUTH KARL
分类号
G03B23/12
主分类号
G03B23/12
代理机构
代理人
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