Granted Patent
Utility
US 4,575,761 · App. 06/489,306
AFT arrangement for a double conversion tuner
Inventors:
David J. Carlson, Juri Tults
Patented Case
View Patent ↗
Granted: Mar 11, 1986
Filed: Apr 28, 1983
Inventors
David J. Carlson
Juri Tults
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.