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Priority claimed from AT1073/89Aexternal-prioritypatent/AT392774B/de
Application filed by Veitscher Magnesitwerke AgfiledCriticalVeitscher Magnesitwerke Ag
Publication of NO910030D0publicationCriticalpatent/NO910030D0/no
Publication of NO910030LpublicationCriticalpatent/NO910030L/no