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.П. ВойтенкоfiledCriticalФ.П. Войтенко
Priority to SU151479ApriorityCriticalpatent/SU43269A1/en
Application grantedgrantedCritical
Publication of SU43269A1publicationCriticalpatent/SU43269A1/en