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
CA791705A
Inventor
Nicklin Thomas
Farrington Frederick
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.)
North Western Gas Board
Original Assignee
North Western Gas Board
Publication date
Application grantedgrantedCritical
Publication of CA791705ApublicationCriticalpatent/CA791705A/en