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
CA682918A
Inventor
A. Halliwell James
Edmunds Ivor
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.)
Vickers Armstrongs South Marston Ltd
Original Assignee
Vickers Armstrongs South Marston Ltd
Publication date
Application grantedgrantedCritical
Publication of CA682918ApublicationCriticalpatent/CA682918A/en