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
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Application filed by В.Я. ЗабановfiledCriticalВ.Я. Забанов
Priority to SU105060ApriorityCriticalpatent/SU33666A1/en
Application grantedgrantedCritical
Publication of SU33666A1publicationCriticalpatent/SU33666A1/en