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Priority claimed from US06/488,893external-prioritypatent/US4487884A/en
Application filed by Hercules IncfiledCriticalHercules Inc
Priority claimed from EP83105589Aexternal-prioritypatent/EP0126176B1/en
Application grantedgrantedCritical
Publication of ATE76884T1publicationCriticalpatent/ATE76884T1/en