Granted Patent
Utility
US 5,047,821 · App. 07/494,044
Transferred electron III-V semiconductor photocathode
Inventors:
Kenneth Costello, William E. Spicer, Verle W. Aebi
Patented Case
View Patent ↗
Granted: Sep 10, 1991
Filed: Mar 15, 1990
Inventors
Kenneth Costello
William E. Spicer
Verle W. Aebi
Assignee (at issue)
INTEVAC, INC.
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.