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
CA614929A
Inventor
Jr. William C. Clarke
Original Assignee
Armco Inc
Publication date
Application grantedgrantedCritical
Publication of CA614929ApublicationCriticalpatent/CA614929A/en