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发明名称
Nichtspiegelnder Projektionsschirm für die Projektion im durchfallenden Licht, insbesondere zur Verwendung in Verbindung mit Fensterscheiben wie Schaufensterscheiben.
摘要
申请公布号
CH175488(A)
申请公布日期
1935.02.28
申请号
CHD175488
申请日期
1934.01.20
申请人
HEMPEL,GUSTAV
发明人
HEMPEL,GUSTAV
分类号
G03B21/62;G09F19/18
主分类号
G03B21/62
代理机构
代理人
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