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Application filed by В.Н. ЕгоровfiledCriticalВ.Н. Егоров
Priority to SU29960ApriorityCriticalpatent/SU10776A1/en
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Publication of SU10776A1publicationCriticalpatent/SU10776A1/en
A procedure and its corresponding apparatus, to achieve that the photographic films and papers are held vertically during the development, fixing and washing operation.