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
CA760796A
Inventor
D. Gordon Elwood
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.)
E V PRENTICE CO
Original Assignee
E V PRENTICE CO
Publication date
Application grantedgrantedCritical
Publication of CA760796ApublicationCriticalpatent/CA760796A/en