Granted Patent
Utility
US 5,680,157 · App. 07/927,334
Pointing device with differential optomechanical sensing
Inventors:
Marc Bidiville, Javier Arreguit, Eric Vittoz
Patented Case
View Patent ↗
Granted: Oct 21, 1997
Filed: Aug 10, 1992
Inventors
Marc Bidiville
Javier Arreguit
Eric Vittoz
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.