Granted Patent
Utility
US 5,965,890 · App. 09/000,686
Solid state infrared chopper
Inventor:
Charles M. Hanson
Patented Case
View Patent ↗
Granted: Oct 12, 1999
Filed: Dec 30, 1997
Inventor
Charles M. Hanson
Assignee (at issue)
Raytheon 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.