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
CA759817A
Inventor
W. Golden Paul
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.)
INTERNATIONAL TYPOGRAPHICAL UNION OF NORTH AMERICA
Original Assignee
INTERNATIONAL TYPOGRAPHICAL UNION OF NORTH AMERICA
Publication date
Application grantedgrantedCritical
Publication of CA759817ApublicationCriticalpatent/CA759817A/en