.~.~.~> Web advancing means in combination with sensing or selector means
DEFINITION
Classification: 40/466
Electromotor operated:
(under subclass 463) Exhibitor wherein the circuitry controls an electromotor which in turn causes the exhibitor to change.
SEE OR SEARCH THIS CLASS, SUBCLASS:
470, for changing exhibitors having an electric drive motor but without the specific control circuitry.
SEE OR SEARCH CLASS
318, Electricity: Motive Power Systems,
445+, for automatic electric motor starting and stopping systems; subclasses 494+ for electric motor starting and stopping by armature circuit control; subclasses 521+ for electric motor starting and stopping by field circuit control.