Granted Patent
Utility
US 6,456,191 · App. 09/274,608
Tag system with anti-collision features
Inventor:
Vladimir Federman
Patented Case
View Patent ↗
Granted: Sep 24, 2002
Filed: Mar 23, 1999
Inventor
Vladimir Federman
Assignee (at issue)
eXI Wireless Systems 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.