Granted Patent
Utility
US 4,477,816 · App. 06/398,061
Corrugated antenna feed horn with means for radiation pattern control
Inventor:
Ching-Fai Cho
Patented Case
View Patent ↗
Granted: Oct 16, 1984
Filed: Jul 14, 1982
Inventor
Ching-Fai Cho
Assignee (at issue)
International Telephone and Telegraph 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.