Granted Patent
Utility
US 5,574,480 · App. 08/435,075
Computer pointing device
Inventors:
Maarten R. Pranger, Cristian A. Fraenkel, Richard Pekelney, David C. Shafer
Patented Case
View Patent ↗
Granted: Nov 12, 1996
Filed: May 8, 1995
Inventors
Maarten R. Pranger
Cristian A. Fraenkel
Richard Pekelney
David C. Shafer
Assignee (at issue)
Kensington Microware Limited
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.