(under subclass 17) Systems and networks provided with automatically operated means to control an equalizer and delay network.
(1) Note. This subclass includes systems including an equalizer and/or a delay network which is automatically controlled in response to some condition in the system and also equalizers and/or delay networks which are provided with other automatic control means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
12, for automatic equalization and/or delay control networks utilized for preventing, suppressing or eliminating interference.
15, for automatic equalization and/or delay control networks controlled by the signal derived from a pilot line.
16, for automatic equalization and or delay control networks involving a pilot current control.
28, for nonautomatic equalizers. 138+, for nonautomatic delay networks.
SEE OR SEARCH CLASS
323, Electricity: Power Supply or Regulation Systems,
212, 219 for automatic phase control systems involving a single frequency.
363, Electric Power Conversion Systems,
2+, 9+ and 36 for plural conversion systems involving phase conversion; subclasses 148+ for phase conversion systems, per se; particularly subclass 149 for phase conversion systems involving automatic voltage magnitude or phase angle control.
