Granted Patent
Utility
US 4,888,600 · App. 07/149,804
Keyboard arrangement with ghost key condition detection
Inventors:
Frank Edward Anderson, Christopher James Gay, Scott A. Hightower, Karen G. Luton
Patented Case
View Patent ↗
Granted: Dec 19, 1989
Filed: Jan 29, 1988
Inventors
Frank Edward Anderson
Christopher James Gay
Scott A. Hightower
Karen G. Luton
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.