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 Каунасский Политехнический ИнститутfiledCriticalКаунасский Политехнический Институт
Priority to SU1860930ApriorityCriticalpatent/SU473261A1/en
Application grantedgrantedCritical
Publication of SU473261A1publicationCriticalpatent/SU473261A1/en