Granted Patent
Utility
US 4,789,255 · App. 07/053,890
Correction buffer
Inventors:
Douglas E. Hays, James F. Lederer
Patented Case
View Patent ↗
Granted: Dec 6, 1988
Filed: May 26, 1987
Inventors
Douglas E. Hays
James F. Lederer
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.