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Publication date
Priority claimed from US05/925,138external-prioritypatent/US4230680A/en
Priority claimed from US05/925,137external-prioritypatent/US4230669A/en
Application filed by The M. W. Kellogg CompanyfiledCriticalThe M. W. Kellogg Company
Priority claimed from EP79301364Aexternal-prioritypatent/EP0007743B1/de
Application grantedgrantedCritical
Publication of ATE11030T1publicationCriticalpatent/ATE11030T1/de