Granted Patent
Utility
US 6,351,260 · App. 09/262,398
User input device for a computer system
Inventors:
David Graham, Daniel Francis
Patented Case
View Patent ↗
Granted: Feb 26, 2002
Filed: Mar 4, 1999
Inventors
David Graham
Daniel Francis
Assignee (at issue)
Poa Sana, Inc.
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.