Granted Patent
Utility
US 5,973,621 · App. 08/768,756
Compact keyed input device
Inventor:
David Levy
Patented Case
View Patent ↗
Granted: Oct 26, 1999
Filed: Dec 17, 1996
Inventor
David Levy
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.