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 Т.Т. КаллиоfiledCriticalТ.Т. Каллио
Priority to SU12634ApriorityCriticalpatent/SU8404A1/ru
Application grantedgrantedCritical
Publication of SU8404A1publicationCriticalpatent/SU8404A1/ru