Granted Patent
Utility
US 6,029,894 · App. 09/258,005
Optical filtering system for a laser bar code scanner having narrow band-pass characteristics with spatially separated filtering elements
Inventors:
Thomas Amundsen, Robert Blake, George B. Rockstein, David M. Wilz, Sr., Carl Harry Knowles
Patented Case
View Patent ↗
Granted: Feb 29, 2000
Filed: Feb 26, 1999
Inventors
Thomas Amundsen
Robert Blake
George B. Rockstein
David M. Wilz, Sr.
Carl Harry Knowles
Assignee (at issue)
METROLOGIC INSTRUMENTS, 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.