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发明名称
Bildfenstertür bei Projektionsapparaten, insbesondere bei Kinoapparaten.
摘要
申请公布号
AT142684(B)
申请公布日期
1935.08.26
申请号
ATD142684
申请日期
1934.08.31
申请人
GUSTAV FRIEDL;KARL CHALOUPKA
发明人
GUSTAV FRIEDL;KARL CHALOUPKA
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