Granted Patent
Utility
US 4,780,684 · App. 07/111,467
Microwave integrated distributed amplifier with field emission triodes
Inventor:
Henry G. Kosmahl
Patented Case
View Patent ↗
Granted: Oct 25, 1988
Filed: Oct 22, 1987
Inventor
Henry G. Kosmahl
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.