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
CA856196A
Inventor
W. Hanks Charles
D'a. Hunt Charles
Original Assignee
Air Reduction Co Inc
Publication date
Application grantedgrantedCritical
Publication of CA856196ApublicationCriticalpatent/CA856196A/en