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
CA622840A
Inventor
H. Connell Wade
Joseph F. Cooper, Jr.
E. Swanstrom John
E. Swanson Swan
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.)
Diamond Tool and Horseshoe Co
Original Assignee
Diamond Tool and Horseshoe Co
Publication date
Application grantedgrantedCritical
Publication of CA622840ApublicationCriticalpatent/CA622840A/en