Granted Patent
Utility
US 4,611,230 · App. 06/683,125
Vertical video centering control system
Inventor:
David K. Nienaber
Patented Case
View Patent ↗
Granted: Sep 9, 1986
Filed: Dec 18, 1984
Inventor
David K. Nienaber
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.