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
Inventor
A. Black Sheppard
D. Heide John
Original Assignee
Uniroyal Ltd Canada
Publication date
Application grantedgrantedCritical
Publication of CA772133ApublicationCriticalpatent/CA772133A/en