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
CA765803A
Inventor
A. Baker James
W. James John
Polkinhorne Harry
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.)
Aspro Nicholas Ltd
Original Assignee
Aspro Nicholas Ltd
Publication date
Application grantedgrantedCritical
Publication of CA765803ApublicationCriticalpatent/CA765803A/en