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 Ki Politekhn I Im 50 Letiya VefiledCriticalKi Politekhn I Im 50 Letiya Ve
Priority to SU914945077ApriorityCriticalpatent/RU1832316C/en
Application grantedgrantedCritical
Publication of RU1832316CpublicationCriticalpatent/RU1832316C/en