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Priority claimed from US06/108,778external-prioritypatent/US4290855A/en
Priority claimed from US06/109,003external-prioritypatent/US4323439A/en
Application filed by Univ CaliforniafiledCriticalUniv California
Priority claimed from EP80108074Aexternal-prioritypatent/EP0031565B1/en
Application grantedgrantedCritical
Publication of ATE15451T1publicationCriticalpatent/ATE15451T1/en