Granted Patent
Utility
US 4,990,925 · App. 06/607,848
Interferometric radiometer
Inventors:
Charles R. Edelsohn, Carl A. Wiley
Patented Case
View Patent ↗
Granted: Feb 5, 1991
Filed: May 7, 1984
Inventors
Charles R. Edelsohn
Carl A. Wiley
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.