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Priority claimed from US06/854,147external-prioritypatent/US4757262A/en
Priority claimed from IN374/MAS/86Aexternal-prioritypatent/IN167451B/en
Application filed by Univ TexasfiledCriticalUniv Texas
Priority to IN199/MAS/90ApriorityCriticalpatent/IN172128B/en
Publication of IN172128BpublicationCriticalpatent/IN172128B/en