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
CA602134A
Inventor
Petursson Sigurdur
S. Paul Bert
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.)
Jacobs and Thompson Ltd
Original Assignee
Jacobs and Thompson Ltd
Publication date
Application grantedgrantedCritical
Publication of CA602134ApublicationCriticalpatent/CA602134A/en