Granted Patent
Utility
US 4,687,301 · App. 06/754,802
Full-color projector system with a tricolor-separating prism
Inventor:
Arno G. Ledebuhr
Patented Case
View Patent ↗
Granted: Aug 18, 1987
Filed: Jul 12, 1985
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.