Granted Patent
Utility
US 6,476,708 · App. 09/045,860
Detection of an RFID device by an RF reader unit operating in a reduced power state
Inventor:
David Johnson
Patented Case
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Granted: Nov 5, 2002
Filed: Mar 20, 1998
Inventor
David Johnson
Assignee (at issue)
HID 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.