Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US06/796,844external-prioritypatent/US4677158A/en
Application filed by United Catalysts IncfiledCriticalUnited Catalysts Inc
Application grantedgrantedCritical
Publication of ATE99721T1publicationCriticalpatent/ATE99721T1/en