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.)
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Application filed by Ethyl CorpfiledCriticalEthyl Corp
Priority claimed from PCT/US1989/000374external-prioritypatent/WO1989006965A1/en
Application grantedgrantedCritical
Publication of ATE94398T1publicationCriticalpatent/ATE94398T1/en