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
CA718139A
Inventor
Frank W. Roller, Sr.
E. Steinberg Harold
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.)
Esterbrook Pen Co
Original Assignee
Esterbrook Pen Co
Publication date
Application grantedgrantedCritical
Publication of CA718139ApublicationCriticalpatent/CA718139A/en