Granted Patent
Utility
US 5,909,210 · App. 08/821,040
Keyboard-compatible optical determination of object's position
Inventors:
Richard M. Knox, John R. Masters, Kevin Clancy
Patented Case
View Patent ↗
Granted: Jun 1, 1999
Filed: Mar 20, 1997
Inventors
Richard M. Knox
John R. Masters
Kevin Clancy
Assignee (at issue)
Compaq Computer 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.