Granted Patent
Utility
US 5,461,385 · App. 08/236,598
RF/ID transponder system employing multiple transponders and a sensor switch
Inventor:
William E. Armstrong
Patented Case
View Patent ↗
Granted: Oct 24, 1995
Filed: Apr 29, 1994
Inventor
William E. Armstrong
Assignee (at issue)
Hughes Identification Devices, 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.