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Filing date
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Application filed by Halvor SagafiledCriticalHalvor Saga
Priority to NO870707ApriorityCriticalpatent/NO870707D0/en
Publication of NO870707D0publicationCriticalpatent/NO870707D0/en
Priority to NO874556Aprioritypatent/NO163303C/en
Priority to EP88301219Aprioritypatent/EP0280447B1/en
Priority to DE8888301219Tprioritypatent/DE3873560T2/en
Priority to FI880821Aprioritypatent/FI88202C/en
Priority to US07/158,601prioritypatent/US4836181A/en