Granted Patent
Utility
US 4,902,990 · App. 07/249,136
Thick film microwave coupler
Inventor:
Terry C. Cicso
Patented Case
View Patent ↗
Granted: Feb 20, 1990
Filed: Sep 26, 1988
Inventor
Terry C. Cicso
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.