Granted Patent
Utility
US 4,353,658 · App. 06/270,475
Ribbon feed mode shift mechanism
Inventor:
James A. Craft
Patented Case
View Patent ↗
Granted: Oct 12, 1982
Filed: Jun 4, 1981
Inventor
James A. Craft
Assignee (at issue)
International Business Machines Corporation
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.