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
CA786666A
Inventor
Albert W. Hammerlund, Jr.
M. Farniok Richard
Albert W. Hammerlund, Sr.
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.)
HAMMERLUND SHEET METAL
Original Assignee
HAMMERLUND SHEET METAL
Publication date
Application grantedgrantedCritical
Publication of CA786666ApublicationCriticalpatent/CA786666A/en