Granted Patent
Utility
US 5,311,167 · App. 07/745,017
UV/IR fire detector with dual wavelength sensing IR channel
Inventors:
Jonathan Plimpton, George L. Minott
Patented Case
View Patent ↗
Granted: May 10, 1994
Filed: Aug 14, 1991
Inventors
Jonathan Plimpton
George L. Minott
Assignee (at issue)
Armtec Industries Inc.
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.