Granted Patent
Utility
US 6,249,005 · App. 09/190,843
Infrared radiation filament and method of manufacture
Inventor:
Edward A. Johnson
Patented Case
View Patent ↗
Granted: Jun 19, 2001
Filed: Nov 12, 1998
Inventor
Edward A. Johnson
Assignee (at issue)
Ion Optics, 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.