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Priority claimed from SU894679492Aexternal-prioritypatent/SU1685376A1/ru
Application filed by Vytautas SirvydisfiledCriticalVytautas Sirvydis
Priority to LTRP662ApriorityCriticalpatent/LT2142B/lt
Publication of LT2142BpublicationCriticalpatent/LT2142B/lt