(under subclass 23) Subject matter wherein the means bearing two or more markings indicates the temperature of the water or water vapor in a heat exchange device which transfers heat from water or water vapor to air.
(1) Note. Subject matter of this subclass type may
comprise, for example, an attachment to a radiator cap or part of the radiator cap of an automobile or be attached to the filter neck or radiator of an automobile.
SEE OR SEARCH CLASS
374, Thermal Measuring and Testing,
100+, for detailed structure of, thermometers, particularly 146 for radiator cap-mounted thermometers.
