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
CA868289A
Inventor
E. Dorschu Karl
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.)
Canadian Oxygen Ltd
Original Assignee
Canadian Oxygen Ltd
Publication date
Application grantedgrantedCritical
Publication of CA868289ApublicationCriticalpatent/CA868289A/en