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
CA864315A
Inventor
B. Willis Robin
L. G. Beattie David
G. Swann Ferris
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.)
361818 ALBERTA Ltd
Original Assignee
Individual
Publication date
Application grantedgrantedCritical
Publication of CA864315ApublicationCriticalpatent/CA864315A/en