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 И.А. ХохренковfiledCriticalИ.А. Хохренков
Priority to SU43109ApriorityCriticalpatent/SU19920A1/ru
Application grantedgrantedCritical
Publication of SU19920A1publicationCriticalpatent/SU19920A1/ru