(under subclass 147) Apparatus wherein the chamber or the material moving means includes means to sense a condition therein or thereof and to react thereto by providing an indication of the status of the condition sensed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
289, for an alarm, indicator, or signal responsive to a sensing means in a system involving a static receptacle and a charging or discharging means therefor.
SEE OR SEARCH CLASS
116, Signals and Indicators, appropriate subclasses for an alarm, indicator, or signal of a mechanical nature.
340, Communications: Electrical, appropriate subclasses for an alarm, indicator, or signal of an electrical nature.
