Granted Patent
Utility
US 4,250,525 · App. 06/037,380
Television horizontal AFPC with phase detector driven at twice the horizontal frequency
Inventors:
Steven A. Steckler, Alvin R. Balaban
Patented Case
View Patent ↗
Granted: Feb 10, 1981
Filed: May 9, 1979
Inventors
Steven A. Steckler
Alvin R. Balaban
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.