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
CA682423A
Inventor
John Dempnock, Jr.
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.)
Demp Nock Co
Original Assignee
Demp Nock Co
Publication date
Application grantedgrantedCritical
Publication of CA682423ApublicationCriticalpatent/CA682423A/en