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
CA898435A
Inventor
T. Duke June
P. Coffey Gerald
E. Ball Lawrence
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
Gerald P Coffey
Lawrence E Ball
Standard Oil Co
Publication date
Application grantedgrantedCritical
Publication of CA898435ApublicationCriticalpatent/CA898435A/en