Granted Patent
Utility
US 4,933,555 · App. 07/153,574
Thermal imager
Inventor:
Brian F. Smith
Patented Case
View Patent ↗
Granted: Jun 12, 1990
Filed: Feb 3, 1988
Inventor
Brian F. Smith
Assignee (at issue)
GEC-Marconi Ltd.
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.