Granted Patent
Utility
US 4,254,421 · App. 06/100,621
Integrated confocal electromagnetic wave lens and feed antenna system
Inventor:
Randall W. Kreutel, Jr.
Patented Case
View Patent ↗
Granted: Mar 3, 1981
Filed: Dec 5, 1979
Inventor
Randall W. Kreutel, Jr.
Assignee (at issue)
Communications Satellite 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.