US PATENT SUBCLASS 455 / 197.3
.~.~.~.~.~ Including additional tuning circuit

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


455 /   HD   TELECOMMUNICATIONS

130  DF  RECEIVER OR ANALOG MODULATED SIGNAL FREQUENCY CONVERTER {24}
150.1  DF  .~ Signal selection based on frequency (e.g., tuning) {13}
196.1  DF  .~.~ Including variation of local oscillator frequency {1}
197.1  DF  .~.~.~ By simultaneous control with signal selection {3}
197.2  DF  .~.~.~.~ Variable capacitor tuned {1}
197.3.~.~.~.~.~ Including additional tuning circuit

DEFINITION

Classification: 455/197.3

Including additional tuning circuit:

(under subclass 197.2) Subject matter including more than two resonant circuits in combination with an additional resonant circuit having a variable capacitor which is varied by the common actuator.