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发明名称
Verfahren zum Kopieren auf Positivfilme mit langer Belichtungszeit (Filme mit Bichromatschicht)
摘要
申请公布号
DE575639(C)
申请公布日期
1933.04.29
申请号
DE1931L079716D
申请日期
1931.11.01
申请人
FERDINAND DE LESSEPS
发明人
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主分类号
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