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
CA678826A
Inventor
M. Hardgrove Ralph
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.)
Babcock Wilcox and Goldie McCulloch Ltd
Original Assignee
Babcock Wilcox and Goldie McCulloch Ltd
Publication date
Application grantedgrantedCritical
Publication of CA678826ApublicationCriticalpatent/CA678826A/en