(under subclass 87) Subject matter which includes positive means which indicates a condition by virtue of a change in temperature.
SEE OR SEARCH CLASS
73, Measuring and Testing,
339+, for thermometers, particularly subclass 356, for qualitative and quantitative color-change indicators and subclass 358, for indicative devices wherein the fusible element constitutes the indicator.
116, Signals and Indicators,
106, and 114.5, for fusible controls for non-electrical alarms and indicators.
252, Compositions, 301.2, for compositions containing fluorescent or phosphorescent substances as analytical, testing, or identification agents and subclass 408.1, for compositions used for testing or indicating.
