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Priority claimed from US06/286,161external-prioritypatent/US4397308A/en
Priority claimed from US06/367,598external-prioritypatent/US4485808A/en
Application filed by George R HepburnfiledCriticalGeorge R Hepburn
Priority claimed from PCT/US1982/001017external-prioritypatent/WO1983000283A1/en
Application grantedgrantedCritical
Publication of ATE44228T1publicationCriticalpatent/ATE44228T1/de