(under subclass 34) Subject matter in which two or more sources of electrical supply are provided to supply energy to the armature or primary circuits of the motors, one or more of which sources of supply are different in kind, type, degree or magnitude or are differently controlled, with respect to one or more others of the sources.
SEE OR SEARCH THIS CLASS, SUBCLASS:
440+, and the subclasses specified in the Notes to the definition of that subclass for other systems which comprise plural sources of supply for the armature circuits of motors.
SEE OR SEARCH CLASS
307, Electrical Transmission or Interconnection Systems,
18+, for systems including a plurality of sources of supply for a plurality of loads, and subclasses 43+ for systems having a plurality of supply circuits or sources. 322, Electricity: Single Generator Systems,
86+, for generators having a field circuit energized from plural sources of supply.