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
CA804536A
Inventor
Andrew T. McCord
George K. Lee
Earland R. Mitchell
Original Assignee
Her Majesty In Right Of Canada Represented By Minister Of Mines And Technical Surveys AS
Canadian Patents and Development Ltd
Publication date
Application grantedgrantedCritical
Publication of CA804536ApublicationCriticalpatent/CA804536A/en