Granted Patent
Utility
US 4,579,461 · App. 06/465,951
Dual sensor radiation pyrometer
Inventor:
Ralph Rudolph
Patented Case
View Patent ↗
Granted: Apr 1, 1986
Filed: Feb 14, 1983
Inventor
Ralph Rudolph
Assignee (at issue)
United States Steel Corporation
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.