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
CA822637A
Inventor
I. Melville Kenneth
E. Francis Lyman
E. Douglas Donald
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.)
Canadian Patents and Development Ltd
Original Assignee
Canadian Patents and Development Ltd
Publication date
Application grantedgrantedCritical
Publication of CA822637ApublicationCriticalpatent/CA822637A/en