Granted Patent
Utility
US 4,845,409 · App. 07/139,689
Independent top/bottom raster correction
Inventor:
Kirk Oliver
Patented Case
View Patent ↗
Granted: Jul 4, 1989
Filed: Dec 30, 1987
Inventor
Kirk Oliver
Assignee (at issue)
Zenith Electronics LLC
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.