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Priority claimed from PCT/SU1987/000079external-prioritypatent/WO1988005708A1/ru
Application filed by Inst Elektroswarki Patona, Magnitogorsk Metallurg, Zaporozhsky Metizny Z Im XxvifiledCriticalInst Elektroswarki Patona
Publication of FI884621ApublicationCriticalpatent/FI884621A/fi
Publication of FI884621A0publicationCriticalpatent/FI884621A0/fi