Granted Patent
Utility
US 4,704,534 · App. 06/835,709
Thermal radiation detector
Inventor:
Andrew A. Turnbull
Patented Case
View Patent ↗
Granted: Nov 3, 1987
Filed: Mar 3, 1986
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.