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 Б.И. ЗбарскийfiledCriticalБ.И. Збарский
Priority to SU73966ApriorityCriticalpatent/SU47A1/en
Application grantedgrantedCritical
Publication of SU47A1publicationCriticalpatent/SU47A1/en