Granted Patent
Utility
US 4,867,543 · App. 07/155,922
Spatial light modulator
Inventors:
Ian Bennion, Roger W. Whatmore, William J. Stewart
Patented Case
View Patent ↗
Granted: Sep 19, 1989
Filed: Mar 25, 1988
Inventors
Ian Bennion
Roger W. Whatmore
William J. Stewart
Assignee (at issue)
Plessey Overseas Limited
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.