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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Publication date
Priority claimed from US06/850,045external-prioritypatent/US4690695A/en
Application filed by Union Carbide CorpfiledCriticalUnion Carbide Corp
Priority to IN371DE1987priorityCriticalpatent/IN173084B/en
Publication of IN173084BpublicationCriticalpatent/IN173084B/en