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
CA660388A
Inventor
John R. Polley
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.)
Canada, Represented By Minister Of National Health And Welfare AS
Original Assignee
Canada, Represented By Minister Of National Health And Welfare AS
Publication date
Application grantedgrantedCritical
Publication of CA660388ApublicationCriticalpatent/CA660388A/en