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.)
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Application filed by Н.Д. Кудрявцев, вцев Н.Д. КудрfiledCriticalН.Д. Кудрявцев
Priority to SU34185ApriorityCriticalpatent/SU16123A1/ru
Application grantedgrantedCritical
Publication of SU16123A1publicationCriticalpatent/SU16123A1/ru