Granted Patent
Utility
US 4,847,500 · App. 06/925,833
Thermal detector
Inventors:
David J. Pedder, Paul Watson, Richard A. C. Bache
Patented Case
View Patent ↗
Granted: Jul 11, 1989
Filed: Sep 12, 1986
Inventors
David J. Pedder
Paul Watson
Richard A. C. Bache
Assignee (at issue)
Plessey Overseas Limited
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.