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 Imyarekov Andrej K, Begletskij Fedor AfiledCriticalImyarekov Andrej K
Priority to SU661105662ApriorityCriticalpatent/SU612666A1/en
Application grantedgrantedCritical
Publication of SU612666A1publicationCriticalpatent/SU612666A1/en