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 Ф.А. Журавель, А.И. ИльенковfiledCriticalФ.А. Журавель
Priority to SU761659ApriorityCriticalpatent/SU151403A1/en
Application grantedgrantedCritical
Publication of SU151403A1publicationCriticalpatent/SU151403A1/en