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
CA820085A
Inventor
B. Newman Nicholas
L. Geer Ronald
W. Foster Kenneth
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.)
Shell USA Inc
Original Assignee
Kenneth W Foster
Nicholas B Newman
Ronald L Geer
Shell Oil Co
Publication date
Application grantedgrantedCritical
Publication of CA820085ApublicationCriticalpatent/CA820085A/en