Granted Patent
Utility
US 4,766,354 · App. 07/000,694
Independent top/bottom pincushion correction
Inventor:
Kirk Oliver
Patented Case
View Patent ↗
Granted: Aug 23, 1988
Filed: Jan 6, 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.