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Priority claimed from US05/864,184external-prioritypatent/US4196959A/en
Application filed by Beckman Instruments IncfiledCriticalBeckman Instruments Inc
Priority to CA385,019ApriorityCriticalpatent/CA1123490A/fr
Application grantedgrantedCritical
Publication of CA1123490ApublicationCriticalpatent/CA1123490A/fr