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
CA810348A
Inventor
F. Chadwick George
Original Assignee
Air Reduction Co Inc
Publication date
Application grantedgrantedCritical
Publication of CA810348ApublicationCriticalpatent/CA810348A/en