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 Vitalij P Sereda, Valerij A ShipulinfiledCriticalVitalij P Sereda
Priority to SU884427238ApriorityCriticalpatent/SU1568232A1/ru
Application grantedgrantedCritical
Publication of SU1568232A1publicationCriticalpatent/SU1568232A1/ru