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 С. Л. Гринберг, Р. Н. ЗмываловfiledCriticalС. Л. Гринберг
Priority to SU1498304ApriorityCriticalpatent/SU414729A1/en
Priority claimed from SU1498304Aexternal-prioritypatent/SU414729A1/en
Application grantedgrantedCritical
Publication of SU414729A2publicationCriticalpatent/SU414729A2/en
Publication of SU414729A1publicationCriticalpatent/SU414729A1/en