Granted Patent
Utility
US 6,427,913 · App. 09/392,267
Object control and tracking system with zonal transition detection
Inventor:
William C. Maloney
Patented Case
View Patent ↗
Granted: Aug 6, 2002
Filed: Sep 9, 1999
Inventor
William C. Maloney
Assignee (at issue)
Key-Trak, 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.