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
CA681330A
Inventor
Henry Hopkes, 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.)
No Sag Spring Co
Original Assignee
No Sag Spring Co
Publication date
Application grantedgrantedCritical
Publication of CA681330ApublicationCriticalpatent/CA681330A/en