Granted Patent
Utility
US 6,498,654 · App. 09/591,658
Optical proximity detector
Inventor:
Francis J. Cusack, Jr.
Patented Case
View Patent ↗
Granted: Dec 24, 2002
Filed: Jun 9, 2000
Inventor
Francis J. Cusack, Jr.
Assignee (at issue)
Harco 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.