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Priority claimed from BR8804583Aexternal-prioritypatent/BR8804583A/en
Priority claimed from BR8804777Aexternal-prioritypatent/BR8804777A/en
Priority claimed from BR8804981Aexternal-prioritypatent/BR8804981A/en
Application filed by Petroleo Brasileiro SafiledCriticalPetroleo Brasileiro Sa
Priority claimed from EP89202174Aexternal-prioritypatent/EP0358261B1/en
Application grantedgrantedCritical
Publication of ATE104173T1publicationCriticalpatent/ATE104173T1/en