Granted Patent
Utility
US 5,874,724 · App. 08/781,755
Light selectable radio frequency identification tag and method therefor
Inventor:
Robert Thomas Cato
Patented Case
View Patent ↗
Granted: Feb 23, 1999
Filed: Jan 10, 1997
Inventor
Robert Thomas Cato
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.