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 YU287671Aexternal-prioritypatent/YU34849B/en
Application filed by Phillips Petroleum CofiledCriticalPhillips Petroleum Co
Priority to YU71079ApriorityCriticalpatent/YU40059B/en
Publication of YU71079ApublicationCriticalpatent/YU71079A/en
Publication of YU40059BpublicationCriticalpatent/YU40059B/en