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
CA882023A
Inventor
M. Davidson David
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.)
Standard Register Co
Original Assignee
Standard Register Co
Publication date
Application grantedgrantedCritical
Publication of CA882023ApublicationCriticalpatent/CA882023A/en