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
CA607938A
Inventor
W. Twaddle Warren
W. Arnold Vernon
A. Harban Arthur
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 CA607938ApublicationCriticalpatent/CA607938A/en