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
CA647254A
Inventor
F. Magnusson Arthur
H. Marks Bert
J. Sperry Leonard
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.)
Globe Union Inc
Original Assignee
Globe Union Inc
Publication date
Application grantedgrantedCritical
Publication of CA647254ApublicationCriticalpatent/CA647254A/en