Granted Patent
Utility
US 6,172,665 · App. 09/220,905
Mouse and trackball with optimal measurement optics
Inventor:
Edward Bullister
Patented Case
View Patent ↗
Granted: Jan 9, 2001
Filed: Dec 24, 1998
Inventor
Edward Bullister
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.