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 IN335/DEL/87Aexternal-prioritypatent/IN168375B/en
Application filed by Lubrizol CorpfiledCriticalLubrizol Corp
Priority to IN306DE1990priorityCriticalpatent/IN178681B/en
Publication of IN178681BpublicationCriticalpatent/IN178681B/en