(under subclass 180) Subject matter in which the inductor includes two windings, at least one of which is formed of plural coils.
SEE OR SEARCH THIS CLASS, SUBCLASS:
5+, for inductors with two or more windings adapted for polyphase use.
170+, for inductors with three or more windings.
220, for inductors having two windings wherein each winding consists of a single coil. Note particularly the subclasses of this class and the outside classes specified in the Notes to subclass 220 as to other fields of search for plural winding inductors wherein at least one of the windings may include plural coils.
SEE OR SEARCH CLASS
330, Amplifiers, 165+, 188+, and 195+ for amplifier systems having transformer coupling, particularly subclasses 171, 190, and 197 where trans
