(under subclass 391) Subject matter wherein the target produces a visible trace when hit by a cathode-ray beam and the deflection means and electrical circuits electrically connected thereto when energized cause a plurality of visible indications or traces to be displayed on the target which will enable simultaneous or sequential viewing of the displayed indications or traces.
SEE OR SEARCH THIS CLASS, SUBCLASS:
13, for plural displays or traces on the cathode-ray tube screen produced by plural cathode-rays.
SEE OR SEARCH CLASS
324, Electricity: Measuring and Testing, for display of plural waveforms and analysis thereof.
