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发明名称
PROJEKTIONS- REPRODUKTIONS- O. DGL. GERAET.
摘要
申请公布号
DE1634096(U)
申请公布日期
1952.01.31
申请号
DE194900D4783U
申请日期
1949.04.01
申请人
OPTISCHE WERKE C. A. STEINHEIL SOEHNE G.M.B.H.
发明人
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主分类号
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