(under subclass 650) Subject matter wherein controlling or detecting means comprises means that are actuated by a change in heat such as a thermostat, temperature dependent resistor, or a semiconductor junction.
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117, for heat responsive devices in miscellaneous switching systems.
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236, Automatic Temperature and Humidity Regulation, appropriate subclasses for control mechanisms responsive to temperature or humidity.
327, Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,
512+, for temperature responsive external effect. 340, Communications: Electrical, particularly
500+, for alarm systems automatically responsive to a condition, for instance, subclasses 584+ for temperature responsive and subclass 602 for moisture or humidity responsive.
374, Thermal Measuring and Testing, appropriate subclasses for heat or temperature responsive measuring systems.
