Granted Patent
Utility
US 4,749,259 · App. 07/013,479
Liquid crystal image projection with multicolor prepolarizing system
Inventor:
Arno G. Ledebuhr
Patented Case
View Patent ↗
Granted: Jun 7, 1988
Filed: May 15, 1987
Inventor
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.