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
CA663302A
Inventor
A. Leslie Ivan
Original Assignee
A. Leslie Ivan
Publication date
Priority claimed from CA663302Texternal-priority
Application grantedgrantedCritical
Publication of CA663302ApublicationCriticalpatent/CA663302A/en