(under subclass 3.15) Subject matter in which means are provided for detecting radio waves and a communication link is provided between the detecting means and the command source in the missile.
SEE OR SEARCH THIS CLASS, SUBCLASS:
3.13, for missiles that are directed to a target by a beam of electromagnetic energy from a command source.
3.14, for remote control systems wherein a command transmits a radio frequency control signal to the missile.
SEE OR SEARCH CLASS
342, Communications: Directive Radio Wave Systems and Devices (e.g., Radar, Radio Navigation), appropriate subclasses for radio wave communication systems, especially
417, for direction finding receivers. See Class 343, Communications: Radio Wave Antennas, subclasses 700+ for radio wave antennas.