Granted Patent
Utility
US 4,792,989 · App. 07/018,216
Tuner circuits and voltage generators therefor
Inventor:
Nicholas P. Cowley
Patented Case
View Patent ↗
Granted: Dec 20, 1988
Filed: Feb 24, 1987
Inventor
Nicholas P. Cowley
Assignee (at issue)
Plessey Overseas Limited
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.