Granted Patent
Utility
US 4,375,640 · App. 06/128,457
Radar systems
Inventor:
Denis H. Harvey
Patented Case
View Patent ↗
Granted: Mar 1, 1983
Filed: Mar 10, 1980
Inventor
Denis H. Harvey
Assignee (at issue)
Plessey Handel Und Investments AG
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.