Granted Patent
Utility
US 4,806,763 · App. 07/115,329
Infrared radiation detection device
Inventor:
Andrew A. Turnbull
Patented Case
View Patent ↗
Granted: Feb 21, 1989
Filed: Nov 2, 1987
Inventor
Andrew A. Turnbull
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.