(under subclass 65) Subject matter wherein the condition responsive means is responsive to temperature or radiant energy in the form of light.
SEE OR SEARCH THIS CLASS, SUBCLASS:
176, for frequency stabilized oscillators with temperature or current responsive stabilizing means in circuit.
SEE OR SEARCH CLASS
250, Radiant Energy,
200+, for visible light responsive photocell electric circuits or photocell apparatus in general.
332, Modulators, appropriate subclasses for modulated oscillators combined with a specific intelligence source of the photoelectric transducer type. 340, Communications: Electrical,
584+, and 600 for electrical signal systems or alarms responsive to temperature, radiant and energy respectively.
356, Optics: Measuring and Testing,
43+, for optical pyrometers, subclasses 402+ for shade or color testing, and subclasses 213+ for photometers.
374, Thermal Measuring and Testing,
121+, for a thermal radiation responsive thermometer, and subclasses 170+ for an electrical thermometer with a digital signal controlling an indicator.
