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Priority claimed from US06/093,199external-prioritypatent/US4305245A/en
Priority claimed from US06/159,691external-prioritypatent/US4330988A/en
Application filed by Milliken Res CorpfiledCriticalMilliken Res Corp
Priority claimed from EP80304048Aexternal-prioritypatent/EP0028939B1/de
Application grantedgrantedCritical
Publication of ATE31946T1publicationCriticalpatent/ATE31946T1/de