(under the class definition) Subject matter involving means or methods of testing amplifiers as set forth in the class definition and/or amplifiers as set forth in the class definition combined with indicating means to show a condition of the amplifier.
(1) Note. Amplifiers combined with a meter or indicating means not involving a condition of the amplifier but where the amplifier is merely an instrument in facilitating such indication, are not classified in this class and subclass but in the appropriate subclass of Class 324, Electricity: Measuring and Testing or Class 340, Communications: Electrical, unless they are specialized for use in the testing of a specific electronic art device in which case, classification is generally with the specific electrical art device.
SEE OR SEARCH CLASS
324, Electricity: Measuring and Testing, appropriate subclasses for electrical measuring and testing. See (1) Note, above.
340, Communications: Electrical, appropriate subclasses for systems with signal or alarm indicating means particularly
