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
CA659809A
Inventor
E. Copenhefer John
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.)
American Air Filter Co Inc
Original Assignee
American Air Filter Co Inc
Publication date
Application grantedgrantedCritical
Publication of CA659809ApublicationCriticalpatent/CA659809A/en