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 О.С. БерзонfiledCriticalО.С. Берзон
Priority to SU2472118/23ApriorityCriticalpatent/SU623334A1/en
Application grantedgrantedCritical
Publication of SU623334A1publicationCriticalpatent/SU623334A1/en