Granted Patent
Utility
US 5,021,791 · App. 06/809,862
Radar systems
Inventor:
David L. Hurd
Patented Case
View Patent ↗
Granted: Jun 4, 1991
Filed: Oct 31, 1985
Inventor
David L. Hurd
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.