Granted Patent
Utility
US 5,340,974 · App. 07/805,445
Polychromatic source calibration by one or more spectrally filtered photodetector currents
Inventor:
Edward F. Zalewski
Patented Case
View Patent ↗
Granted: Aug 23, 1994
Filed: Dec 9, 1991
Inventor
Edward F. Zalewski
Assignee (at issue)
Hughes Aircraft Company
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.