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 Karagandinskij Polt InstitutfiledCriticalKaragandinskij Polt Institut
Priority to SU752187824ApriorityCriticalpatent/SU659764A2/en
Application grantedgrantedCritical
Publication of SU659764A2publicationCriticalpatent/SU659764A2/en