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
CA825060A
Inventor
Singleton Frank
B. Harrison Donald
R. Morris Joseph
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.)
TMM Research Ltd
Original Assignee
TMM Research Ltd
Publication date
Application grantedgrantedCritical
Publication of CA825060ApublicationCriticalpatent/CA825060A/en