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Priority claimed from US06/687,067external-prioritypatent/US4590096A/en
Priority claimed from US06/797,364external-prioritypatent/US4696837A/en
Application filed by M & T Chemicals IncfiledCriticalM & T Chemicals Inc
Priority claimed from EP85309388Aexternal-prioritypatent/EP0186481B1/en
Application grantedgrantedCritical
Publication of ATE53072T1publicationCriticalpatent/ATE53072T1/en