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
CA805386A
Inventor
R. De Haan James
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.)
Cryogenic Engineering Co
Original Assignee
Cryogenic Engineering Co
Publication date
Application grantedgrantedCritical
Publication of CA805386ApublicationCriticalpatent/CA805386A/en