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
CA896590A
Inventor
W. Standish Norman
W. Yanik Richard
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.)
Standard Oil Co
Original Assignee
Standard Oil Co
Publication date
Application grantedgrantedCritical
Publication of CA896590ApublicationCriticalpatent/CA896590A/en