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
CA878914A
Inventor
E. Tanner Henry
E. Roth Ernest
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.)
ALVEY
Original Assignee
ALVEY
Publication date
Application grantedgrantedCritical
Publication of CA878914ApublicationCriticalpatent/CA878914A/en