Granted Patent
Utility
US 4,474,036 · App. 06/459,856
Infra-red radiation detectors
Inventors:
Patrick J. R. Ball, William A. Dunn
Patented Case
View Patent ↗
Granted: Oct 2, 1984
Filed: Jan 21, 1983
Inventors
Patrick J. R. Ball
William A. Dunn
Assignee (at issue)
U.S. Philips 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.