(under subclass 317) Indicator, sampler, or inspection feature wherein the condition or function is a measure of warmth or coldness of a liquid or gas using a reference to some standard value.
SEE OR SEARCH CLASS
116, Signals and Indicators, for a specifically recited and detailed mechanical device for giving signals of the nature of an alarm or indicator that appeals to any one or more of the senses and combined with nominal apparatus structure from other classes,
101+, for a thermal alarm giving audible indication usually operated automatically, or subclasses 216+ for a temperature responsive or compensating means indicator having means to convey information to one of the senses.
374, Thermal Measuring and Testing,
141+, for temperature sensing in combination with only a nominally recited diverse art device.
