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Priority claimed from US06/769,532external-prioritypatent/US5020548A/en
Priority claimed from US06/790,484external-prioritypatent/US4714082A/en
Priority claimed from IN382/CAL/86Aexternal-prioritypatent/IN166122B/en
Application filed by Reynolds Tobacco Co RfiledCriticalReynolds Tobacco Co R
Publication of IN168870BpublicationCriticalpatent/IN168870B/en