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Priority claimed from US06/887,850external-prioritypatent/US4829104A/en
Priority claimed from US07/069,475external-prioritypatent/US4883572A/en
Application filed by Dow Chemical CofiledCriticalDow Chemical Co
Priority claimed from EP87110374Aexternal-prioritypatent/EP0253404B1/en
Application grantedgrantedCritical
Publication of ATE92941T1publicationCriticalpatent/ATE92941T1/en