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发明名称
Einrichtung zur Erleichterung des Aufsuchens und Betrachtens bestimmter, auswaehlbarer Stellen von Bildern und Schrifttexten
摘要
申请公布号
DE867758(C)
申请公布日期
1953.02.19
申请号
DE1950O000885
申请日期
1950.07.08
申请人
OPTISCHE WERKE C. A. STEINHEIL SOEHNE G.M.B.H.
发明人
HILBER JOHANN;MAIERSHOFER KARL
分类号
G03B21/00
主分类号
G03B21/00
代理机构
代理人
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