Granted Patent
Utility
US 5,209,587 · App. 07/814,454
Ink ribbon feed
Inventors:
Raymond John Herbert, Thomas D. Williams
Patented Case
View Patent ↗
Granted: May 11, 1993
Filed: Dec 30, 1991
Inventors
Raymond John Herbert
Thomas D. Williams
Assignee (at issue)
Alcatel Business Systems
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.