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 IN154/DEL/87Aexternal-prioritypatent/IN168614B/en
Application filed by Ashland Oil IncfiledCriticalAshland Oil Inc
Priority to IN860DE1989priorityCriticalpatent/IN176267B/en
Publication of IN176267BpublicationCriticalpatent/IN176267B/en