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Priority claimed from US06/508,831external-prioritypatent/US4481125A/en
Application filed by Houghton & Co E FfiledCriticalHoughton & Co E F
Priority claimed from PCT/US1984/000875external-prioritypatent/WO1985000182A1/en
Application grantedgrantedCritical
Publication of ATE60620T1publicationCriticalpatent/ATE60620T1/de