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Priority claimed from DE19823239535external-prioritypatent/DE3239535A1/de
Application filed by Heraeus ElektrodenfiledCriticalHeraeus Elektroden
Publication of NO842469LpublicationCriticalpatent/NO842469L/no
Publication of NO163334BpublicationCriticalpatent/NO163334B/no
Publication of NO163334CpublicationCriticalpatent/NO163334C/no