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.П. Комалев, И.М. ОшурковfiledCriticalМ.П. Комалев
Priority to SU102217ApriorityCriticalpatent/SU29040A1/en
Application grantedgrantedCritical
Publication of SU29040A1publicationCriticalpatent/SU29040A1/en