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
CA657480A
Inventor
I. Valko Emery
C. Tesoro Giuliana
D. Szubin Edward
K. Lindemann Martin
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.)
Onyx Oil and Chemical Co
Original Assignee
Onyx Oil and Chemical Co
Publication date
Application grantedgrantedCritical
Publication of CA657480ApublicationCriticalpatent/CA657480A/en