Legal status (The legal status 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 status listed.)
Expired
Application number
CA720,989A
Inventor
John P. Hogan
Robert L. Banks
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Phillips Petroleum Co
Original Assignee
Phillips Petroleum Co
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 US03/558,530external-prioritypatent/US4376851A/en
Application filed by Phillips Petroleum CofiledCriticalPhillips Petroleum Co
Application grantedgrantedCritical
Publication of CA956748ApublicationCriticalpatent/CA956748A/en