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 А.А. ХренниковfiledCriticalА.А. Хренников
Priority to SU122641ApriorityCriticalpatent/SU39925A1/en
Priority claimed from SU122641Aexternal-prioritypatent/SU39925A1/en
Application grantedgrantedCritical
Publication of SU39924A1publicationCriticalpatent/SU39924A1/en
Publication of SU39925A1publicationCriticalpatent/SU39925A1/en