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
CA770060A
Inventor
W. Andrews Charles
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.)
Materion Brush Inc
Original Assignee
Materion Brush Inc
Publication date
Application grantedgrantedCritical
Publication of CA770060ApublicationCriticalpatent/CA770060A/en