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
CA750632A
Inventor
F. Michael Vesta
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.)
Rock Island Oil and Refining Co Inc
Original Assignee
Rock Island Oil and Refining Co Inc
Publication date
Application grantedgrantedCritical
Publication of CA750632ApublicationCriticalpatent/CA750632A/en