Granted Patent
Utility
US 6,647,142 · App. 09/628,461
Badge identification system
Inventor:
Paul Beardsley
Patented Case
View Patent ↗
Granted: Nov 11, 2003
Filed: Jul 31, 2000
Inventor
Paul Beardsley
Assignee (at issue)
Mitsubishi Electric Research Laboratories, 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.