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
CA651668A
Inventor
B. Jenkins David
A. Hopkins Philip
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.)
ES&A Robinson Ltd
Original Assignee
ES&A Robinson Ltd
Publication date
Application grantedgrantedCritical
Publication of CA651668ApublicationCriticalpatent/CA651668A/en