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发明名称
OPTISCHE HALBSCHATTENVORRICHTUNG.
摘要
申请公布号
DE1627427(U)
申请公布日期
1951.08.23
申请号
DE194800D7196U
申请日期
1948.10.01
申请人
OPTISCHE WERKE C. A. STEINHEIL SOEHNE G.M.B.H.
发明人
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