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Priority claimed from SU884429058Aexternal-prioritypatent/SU1673339A1/en
Application filed by Inst Elektroswarki Patona, Proizv Ob ZhdanovtyazhmashfiledCriticalInst Elektroswarki Patona
Publication of NO900538D0publicationCriticalpatent/NO900538D0/en
Publication of NO900538LpublicationCriticalpatent/NO900538L/en