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 Boris A VatipkofiledCriticalBoris A Vatipko
Priority to SU894752469ApriorityCriticalpatent/RU1785674C/ru
Application grantedgrantedCritical
Publication of RU1785674CpublicationCriticalpatent/RU1785674C/ru