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发明名称
Vorrichtung zur Messung von Belichtungszeiten bei photographischen Reproduktionen.
摘要
申请公布号
AT143004(B)
申请公布日期
1935.10.10
申请号
ATD143004
申请日期
1934.01.31
申请人
DR. FRIEDRICH REISS
发明人
DR. FRIEDRICH REISS
分类号
主分类号
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