Granted Patent
Utility
US 4,842,376 · App. 06/758,917
Double-schottky diode liquid crystal light valve
Inventors:
Paul O. Braatz, Uzi Efron
Patented Case
View Patent ↗
Granted: Jun 27, 1989
Filed: Jul 25, 1985
Inventors
Paul O. Braatz
Uzi Efron
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.