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Priority claimed from US06/262,825external-prioritypatent/US4385640A/en
Application filed by E Iverson JacobfiledCriticalE Iverson Jacob
Publication of IT8123816A0publicationCriticalpatent/IT8123816A0/it
Application grantedgrantedCritical
Publication of IT1167493BpublicationCriticalpatent/IT1167493B/it