Granted Patent
Utility
US 4,839,718 · App. 07/152,345
Luminance selection apparatus for video signal control system
Inventors:
Robert L. Hemsky, Terry L. Tucker
Patented Case
View Patent ↗
Granted: Jun 13, 1989
Filed: Feb 4, 1988
Inventors
Robert L. Hemsky
Terry L. Tucker
Assignee (at issue)
Utah Scientific Advanced Development Center, Inc.
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.