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Priority claimed from US06/248,994external-prioritypatent/US4366307A/en
Application filed by Prod Res & Chem CorpfiledCriticalProd Res & Chem Corp
Priority claimed from EP81305695Aexternal-prioritypatent/EP0054379B1/de
Application grantedgrantedCritical
Publication of ATE18244T1publicationCriticalpatent/ATE18244T1/de