(under the class definition) Device wherein means are provided which a) automatically make a permanent record of selected events occurring during the operation of said device, b) display information concerning the condition of the device or a material therein, c) provide for the examination of selected portions of the device or material therein, or d) gauge or otherwise determine a physical, chemical, or electrical characteristic or property of the device or material therein.
SEE OR SEARCH CLASS
432, Heating,
32, for heating devices of general utility having indicating, illuminating or inspection means; for additional search areas, see the search notes attached to the subclass definition of subclass 32.