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
CA837417A
Inventor
R. Spencer John
D. Greathouse Walton
H. Cheek James
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.)
ConocoPhillips Co
Original Assignee
Continental Oil Co
Publication date
Application grantedgrantedCritical
Publication of CA837417ApublicationCriticalpatent/CA837417A/en