Granted Patent
Utility
US 4,336,549 · App. 06/172,325
Schottky-barrier gate gallium arsenide field effect devices
Inventor:
Glenn O. Ladd, Jr.
Patented Case
View Patent ↗
Granted: Jun 22, 1982
Filed: Jul 25, 1980
Inventor
Glenn O. Ladd, Jr.
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.