Granted Patent
Utility
US 4,367,489 · App. 06/230,309
Television ghost detection and cancellation system controlled over several lines of a vertical retrace interval
Inventor:
David D. Holmes
Patented Case
View Patent ↗
Granted: Jan 4, 1983
Filed: Jan 30, 1981
Inventor
David D. Holmes
Assignee (at issue)
RCA Corporation
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.