Granted Patent
Utility
US 4,317,063 · App. 06/088,169
Pyroelectric detectors
Inventors:
David J. Pedder, David J. Warner
Patented Case
View Patent ↗
Granted: Feb 23, 1982
Filed: Oct 25, 1979
Inventors
David J. Pedder
David J. Warner
Assignee (at issue)
Plessey Handel Und Investments AG
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.