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 А.П. УваровfiledCriticalА.П. Уваров
Priority to SU581ApriorityCriticalpatent/SU70970A1/en
Application grantedgrantedCritical
Publication of SU70970A1publicationCriticalpatent/SU70970A1/en