Granted Patent
Utility
US 4,818,958 · App. 07/133,703
Compact dual series waveguide feed
Inventors:
Kuan M. Lee, William L. Lange, Stan W. Livingston
Patented Case
View Patent ↗
Granted: Apr 4, 1989
Filed: Dec 16, 1987
Inventors
Kuan M. Lee
William L. Lange
Stan W. Livingston
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.