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Priority claimed from US435651Aexternal-prioritypatent/US3863366A/en
Priority claimed from US05/493,965external-prioritypatent/US4003145A/en
Application filed by Ro Search IncfiledCriticalRo Search Inc
Publication of FI375474A7publicationCriticalpatent/FI375474A7/fi
Publication of FI60111BpublicationCriticalpatent/FI60111B/fi
Application grantedgrantedCritical
Publication of FI60111CpublicationCriticalpatent/FI60111C/fi