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.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WILSON WELDER AND METAL CO
Airco Inc
Original Assignee
WILSON WELDER AND METAL CO
Air Reduction Co Inc
Publication date
Application grantedgrantedCritical
Publication of CA450075ApublicationCriticalpatent/CA450075A/en