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
CA912221A
Inventor
Hanson Raymond
S. Hall Dennis
J. Tutt Kingsley
F. Willbond William
E. Robbins John
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.)
USM Corp
Original Assignee
USM Corp
Publication date
Application grantedgrantedCritical
Publication of CA912221ApublicationCriticalpatent/CA912221A/en