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 Gennadij T SitkarevfiledCriticalGennadij T Sitkarev
Priority to SU4859638priorityCriticalpatent/RU1808942C/en
Application grantedgrantedCritical
Publication of RU1808942CpublicationCriticalpatent/RU1808942C/en