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Priority claimed from DE19722206361external-prioritypatent/DE2206361C3/de
Priority claimed from DE19722218350external-prioritypatent/DE2218350C3/de
Priority claimed from NO47773Aexternal-prioritypatent/NO133330C/no
Publication of NO750521LpublicationCriticalpatent/NO750521L/no
Application filed by Reinhard WirtgenfiledCriticalReinhard Wirtgen
Publication of NO135534BpublicationCriticalpatent/NO135534B/no
Publication of NO135534CpublicationCriticalpatent/NO135534C/no