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
CA687045A
Inventor
L. Allen Edwin
R. Kirk Joseph
Y. Dodge Adiel
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.)
Atwood Vacuum Machine Co
Original Assignee
Atwood Vacuum Machine Co
Publication date
Application grantedgrantedCritical
Publication of CA687045ApublicationCriticalpatent/CA687045A/en