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 С.М. Нисневич, Д.Н. РозенгаузfiledCriticalС.М. Нисневич
Priority to SU100719ApriorityCriticalpatent/SU27555A1/en
Application grantedgrantedCritical
Publication of SU27555A1publicationCriticalpatent/SU27555A1/en