Granted Patent
Utility
US 4,728,174 · App. 06/927,580
Electron beam addressed liquid crystal light valve
Inventors:
Jan Grinberg, Nobuo J. Koda, Phillip G. Reif, William P. Bleha, Jr., Murray S. Welkowsky, Arno G. Ledebuhr
Patented Case
View Patent ↗
Granted: Mar 1, 1988
Filed: Nov 6, 1986
Inventors
Jan Grinberg
Nobuo J. Koda
Phillip G. Reif
William P. Bleha, Jr.
Murray S. Welkowsky
Arno G. Ledebuhr
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.