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.Б. СелисскийfiledCriticalВ.Б. Селисский
Priority to SU374793ApriorityCriticalpatent/SU73968A1/ru
Application grantedgrantedCritical
Publication of SU73968A1publicationCriticalpatent/SU73968A1/ru