Granted Patent
Utility
US 5,990,871 · App. 08/422,484
Ergonomic pointing device
Inventors:
Aditha May Adams, Steven T. Kaneko, Ferdinand Johannes van Engelen, Christopher G. Alviar, Dick C. K. Liu, Dana Kim, Bridget Cameron Greenberg
Patented Case
View Patent ↗
Granted: Nov 23, 1999
Filed: Apr 12, 1995
Inventors
Aditha May Adams
Steven T. Kaneko
Ferdinand Johannes van Engelen
Christopher G. Alviar
Dick C. K. Liu
Dana Kim
Bridget Cameron Greenberg
Assignee (at issue)
Microsoft 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.