Granted Patent
Utility
US 6,563,423 · App. 09/796,860
Location tracking of individuals in physical spaces
Inventor:
Gordon James Smith
Patented Case
View Patent ↗
Granted: May 13, 2003
Filed: Mar 1, 2001
Inventor
Gordon James 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.