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
Application filed by Union Oil CofiledCriticalUnion Oil Co
Priority to IN224MA1993priorityCriticalpatent/IN181973B/en
Publication of IN181973BpublicationCriticalpatent/IN181973B/en