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Priority claimed from US07/345,446external-prioritypatent/US4910489A/en
Priority claimed from US07/478,424external-prioritypatent/US5027100A/en
Priority claimed from PCT/US1990/002348external-prioritypatent/WO1990013904A1/en
Application filed by Porta Systems CorpfiledCriticalPorta Systems Corp
Publication of NO914240LpublicationCriticalpatent/NO914240L/en
Publication of NO914240D0publicationCriticalpatent/NO914240D0/en