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
CA868292A
Inventor
R. Brooker Leonard
R. D. Whitear Brian
Atkinson Lawrence
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.)
Polychrome Corp
Original Assignee
Polychrome Corp
Publication date
Application grantedgrantedCritical
Publication of CA868292ApublicationCriticalpatent/CA868292A/en