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
CA876445A
Inventor
D. Weaver Earl
J. Manson Walter
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.)
National Standard Co
Original Assignee
National Standard Co
Publication date
Application grantedgrantedCritical
Publication of CA876445ApublicationCriticalpatent/CA876445A/en