(under subclass 342) Combinations wherein the indication is given by means audibly informing the operator of the existence or occurrence of the condition.
SEE OR SEARCH CLASS
116, Signals and Indicators, particularly
67, 137, 147, 148, and any indented subclass.
340, Communications: Electrical,
500+, for electrical alarm systems which are automatically responsive to a condition. 368, Horology: Time Measuring Systems or Devices,
43, 72+, 94, 98+, 109, and 244+ for an horological device including an alarm.
