Granted Patent
Utility
US 6,437,772 · App. 09/725,794
Capacitive pointing stick apparatus with floating conductive cone for symbol manipulation in a graphical user interface
Inventors:
Thomas G. Zimmerman, Barton A. Smith
Patented Case
View Patent ↗
Granted: Aug 20, 2002
Filed: Nov 29, 2000
Inventors
Thomas G. Zimmerman
Barton A. Smith
Assignee (at issue)
International Business Machines 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.