(under the class definition) Subject matter including a delay line tapped at the pulse or discrete step interval; a set of adjustable attenuators connected to each tap, except for a main tap, which attenuators can be used to multiply remaining tap signals by any number between 1 and minus 1; and a summing network.
(1) Note. Equalizers, per se, if they include a means to perform mathematical calculations, are found in Class 708, subclasses 300+ and 819.
(2) Note. Equalizers, per se, are classified in Class 333. See "SEARCH CLASS" below. To be classified here, there must be a pulse or digital communication apparatus.
SEE OR SEARCH CLASS
333, Wave Transmission Lines and Networks,
18, for automatically controlled systems with control of equalizers or delay network; and subclass 28 for coupling networks with equalizer.
