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
CA688252A
Inventor
W. Sharp Allen
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.)
BARKER AUTOMATION
Original Assignee
BARKER AUTOMATION
Publication date
Application grantedgrantedCritical
Publication of CA688252ApublicationCriticalpatent/CA688252A/en