(under subclass 700) Subject matter wherein the antenna includes an electric discharge device, the space discharge of this device serving as a portion of the antenna or the antenna coupling.
(1) Note. When the combination of the antenna and discharge device performs some function in addition to the antenna function, and structure performing such additional function is classified elsewhere, classification is with such structure. For example, the combination of antenna and discharge device is Classified in Class 455, Telecommunications, subclasses 129 and 269+, if the tube operates as an oscillator or detector, the combination being a transmitter or receiver respectively, or in this class (343), subclasses 350+ if in addition the combination is directive.
(2) Note. For the space discharge to serve as the antenna coupling as defined above, the discharge must actually convey the signal energy. The mere control of the discharge by the signal device as in the conventional amplifier triode is not sufficient for classification here.
SEE OR SEARCH CLASS
315, Electric Lamp and Discharge Devices: Systems,
34, for the structural combination of an antenna integral with a space discharge device. 342, Communications: Directive Radio Wave System and Devices (e.g., Radar, Radio Navigation),
350+, for directive transmitting and receiving systems, which may include electric space discharge devices combined with antennas. See also (1) Note above.
455, Telecommunications,
291, for means for coupling antennas to radio receivers by means of electron tube means.
