Granted Patent
Utility
US 4,890,118 · App. 07/289,881
Compensated microwave feed horn
Inventors:
Thomas Hudspeth, Fritz Steinberg
Patented Case
View Patent ↗
Granted: Dec 26, 1989
Filed: Dec 27, 1988
Inventors
Thomas Hudspeth
Fritz Steinberg
Assignee (at issue)
Hughes Aircraft Company
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.