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
CA865452A
Inventor
M. Roberts Seward
Original Assignee
American Flange and Manufacturing Co Inc
Publication date
Application grantedgrantedCritical
Publication of CA865452ApublicationCriticalpatent/CA865452A/en