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Application filed by Bjerkan M Simbas SivilingeniorfiledCriticalBjerkan M Simbas Sivilingenior
Priority to NO811275ApriorityCriticalpatent/NO148949C/en
Priority to NO813658Aprioritypatent/NO149948C/en
Publication of NO811275LpublicationCriticalpatent/NO811275L/en
Publication of NO148949BpublicationCriticalpatent/NO148949B/en
Publication of NO148949CpublicationCriticalpatent/NO148949C/en