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
CA703443A
Inventor
Slater William
Nutter Walter
L. Cole Stanley
T. Denson David
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 CA703443ApublicationCriticalpatent/CA703443A/en