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 П.Е. Марьянов, нов П.Е. МарьfiledCriticalП.Е. Марьянов
Priority to SU84417ApriorityCriticalpatent/SU25254A1/ru
Application grantedgrantedCritical
Publication of SU25254A1publicationCriticalpatent/SU25254A1/ru