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Priority claimed from US06/232,156external-prioritypatent/US4348264A/en
Application filed by Pfizer, Insao SpafiledCriticalPfizer
Priority claimed from ITMI1983U22051Uexternal-prioritypatent/IT8322051U1/it
Publication of GR74923BpublicationCriticalpatent/GR74923B/el