HAVING NEAR FIELD LINK (E.G., CAPACITIVE, INDUCTIVE):
(under the class definition) Subject matter having a transceiver, a base station, and a limited range system (i.e., field strength=k/d where k is a constant and d=distance between the transceiver and base station antennas) whereby signal transfer is inductive or capacitive, rather than electromagnetic.
SEE OR SEARCH CLASS
246, Railway Switches and Signals,
8, for similar subject matter used in train dispatching.
343, Communications: Radio Wave Antennas,
700+, for an antenna used for baseband communication.
381, Electrical Audio Signal Processing Systems and Devices,
79, for a one-way near field voice system. 455, Telecommunications,
41, for a modulated carrier type near field communications system.
