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
CA620879A
Inventor
Hodkin 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.)
ENGINEERING RESEARCH AND APPLICATION Ltd
Original Assignee
ENGINEERING RESEARCH AND APPLICATION Ltd
Publication date
Application grantedgrantedCritical
Publication of CA620879ApublicationCriticalpatent/CA620879A/en