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Priority claimed from US06/471,437external-prioritypatent/US4527639A/en
Application filed by Dickinson Ben Wade O Iii, Dickinson Robert WfiledCriticalDickinson Ben Wade O Iii
Priority claimed from EP83304298Aexternal-prioritypatent/EP0100230B1/en
Application grantedgrantedCritical
Publication of ATE39538T1publicationCriticalpatent/ATE39538T1/en