Granted Patent
Utility
US 4,498,049 · App. 06/357,309
Radiation compensator for gas sensors
Inventor:
Fred Rudek
Patented Case
View Patent ↗
Granted: Feb 5, 1985
Filed: Mar 11, 1982
Inventor
Fred Rudek
Assignee (at issue)
Exo Sensors, 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.