Granted Patent
Utility
US 4,291,336 · App. 06/113,214
Composite keying signal generator for a television receiver
Inventor:
Robert L. Shanley, II
Patented Case
View Patent ↗
Granted: Sep 22, 1981
Filed: Jan 18, 1980
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.