Granted Patent
Utility
US 4,306,239 · App. 06/162,444
Microwave landing systems
Inventor:
Mohamed Enein
Patented Case
View Patent ↗
Granted: Dec 15, 1981
Filed: Jun 24, 1980
Inventor
Mohamed Enein
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.