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 IN891/DEL/84Aexternal-prioritypatent/IN161974B/en
Application filed by Uop IncfiledCriticalUop Inc
Priority to IN654/DEL/87ApriorityCriticalpatent/IN170347B/en
Publication of IN170347BpublicationCriticalpatent/IN170347B/en