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 US07/273,540external-prioritypatent/US4990274A/en
Application filed by Texaco Development CorpfiledCriticalTexaco Development Corp
Priority to IN359/CAL/89ApriorityCriticalpatent/IN171865B/en
Publication of IN171865BpublicationCriticalpatent/IN171865B/en