US PATENT SUBCLASS 483 / 12
WITH SIGNAL OR INDICATOR
Current as of: June, 1999
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WITH SIGNAL OR INDICATOR:
(under the class definition) Apparatus comprising means for alerting a human operator of an existing or pending condition or state of the apparatus, e.g., an alarm, gage, warning light, etc.
SEE OR SEARCH CLASS
116, Signals and Indicators, generally for a mechanical signal or indicator, per se.
340, Communications: Electrical,
815.1+, for an electrical annunciator.