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 Д.Г. ТамбовцевfiledCriticalД.Г. Тамбовцев
Priority to SU2518ApriorityCriticalpatent/SU3142A1/ru
Application grantedgrantedCritical
Publication of SU3142A1publicationCriticalpatent/SU3142A1/ru