Granted Patent
Utility
US 4,622,577 · App. 06/576,915
Decoder for extracting a 4:3 aspect ratio signal from a high definition television signal
Inventors:
Glenn A. Reitmeier, Curtis R. Carlson
Patented Case
View Patent ↗
Granted: Nov 11, 1986
Filed: Feb 3, 1984
Inventors
Glenn A. Reitmeier
Curtis R. Carlson
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.