Granted Patent
Utility
US 5,920,071 · App. 08/834,790
Mercury cadmium telluride devices for detecting and controlling open flames
Inventor:
Donald F. Weirauch
Patented Case
View Patent ↗
Granted: Jul 6, 1999
Filed: Apr 3, 1997
Inventor
Donald F. Weirauch
Assignee (at issue)
Raytheon 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.