Granted Patent
Utility
US 4,599,652 · App. 06/581,127
Dual channel IF TV receiver with AFT derived from the picture carrier in the sound channel
Inventor:
David J. Carlson
Patented Case
View Patent ↗
Granted: Jul 8, 1986
Filed: Feb 17, 1984
Inventor
David J. 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.