Granted Patent
Utility
US 4,591,282 · App. 06/626,078
Drive mechanism for a ribbon disc
Inventor:
John Paul Bradley
Patented Case
View Patent ↗
Granted: May 27, 1986
Filed: Jun 29, 1984
Inventor
John Paul Bradley
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.