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
CA819919A
Inventor
R. Burch Arthur
R. Burnight Thomas
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.)
HARTMAN METAL FABRICATORS
Original Assignee
HARTMAN METAL FABRICATORS
Publication date
Application grantedgrantedCritical
Publication of CA819919ApublicationCriticalpatent/CA819919A/en