Granted Patent
Utility
US 4,412,244 · App. 06/323,197
Switching circuit for television receiver on-screen display
Inventor:
Robert L. Shanley, II
Patented Case
View Patent ↗
Granted: Oct 25, 1983
Filed: Nov 20, 1981
Inventor
Robert L. Shanley, II
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.