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Priority claimed from DE2925413Aexternal-prioritypatent/DE2925413C3/de
Priority claimed from SU2936202Aexternal-prioritypatent/SU1279536A3/ru
Application filed by Berger Johann, Berger JoseffiledCriticalBerger Johann
Publication of LT2134BpublicationCriticalpatent/LT2134B/lt