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 В.П. АстафьевfiledCriticalВ.П. Астафьев
Priority to SU85431ApriorityCriticalpatent/SU23962A1/ru
Application grantedgrantedCritical
Publication of SU23962A1publicationCriticalpatent/SU23962A1/ru