Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by М.Н. НикитинfiledCriticalМ.Н. Никитин
Priority to SU29395ApriorityCriticalpatent/SU12401A1/en
Application grantedgrantedCritical
Publication of SU12401A1publicationCriticalpatent/SU12401A1/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.