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Priority claimed from US07/534,878external-prioritypatent/US5074551A/en
Priority claimed from US07/554,910external-prioritypatent/US5039092A/en
Application filed by Lefeing IncfiledCriticalLefeing Inc
Publication of NO920236D0publicationCriticalpatent/NO920236D0/no
Publication of NO920236LpublicationCriticalpatent/NO920236L/no