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
CA823704A
Inventor
L. Berk William
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.)
Lakeside Engineering Corp
Original Assignee
Lakeside Engineering Corp
Publication date
Application grantedgrantedCritical
Publication of CA823704ApublicationCriticalpatent/CA823704A/en