Granted Patent
Utility
US 5,578,817 · App. 08/485,315
Pointing device utilizing a photodetector array and controlled by a human finger contacting a prism
Inventors:
Marc Bidiville, Eric Peter Raeber, Javier Arreguit, Harthmuth Buczek, Floris A. Van Shaik, Francois Bauduin, Denis O'Keeffe
Patented Case
View Patent ↗
Granted: Nov 26, 1996
Filed: Jun 7, 1995
Inventors
Marc Bidiville
Eric Peter Raeber
Javier Arreguit
Harthmuth Buczek
Floris A. Van Shaik
Francois Bauduin
Denis O'Keeffe
Assignee (at issue)
LOGITECH, 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.