Granted Patent
Utility
US 5,920,307 · App. 08/392,007
System for directly sensing the orientation of a track ball
Inventors:
Greg E. Blonder, George Knoedl, Jr.
Patented Case
View Patent ↗
Granted: Jul 6, 1999
Filed: Feb 21, 1995
Inventors
Greg E. Blonder
George Knoedl, Jr.
Assignee (at issue)
LUCENT TECHNOLOGIES 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.