(under subclass 525) Subject matter which includes between the photoemissive cathode and the phosphor screen an electrode which emits, upon being hit by an electron emitted by the photoemissive cathode, a plurality of secondary electrons to increase the magnitude of the electron current which impact on the phosphor screen.
SEE OR SEARCH THIS CLASS, SUBCLASS:
103+, for a secondary emitter type discharge device.
399+, for a cathode-ray tube having a secondary emissive electrode.
SEE OR SEARCH CLASS
250, Radiant Energy,
207, for a circuit having a photocell with an electron multiplier. 329, Demodulators, appropriate
359, for a demodulator using secondary emission.
330, Amplifiers,
42, for an amplifier with a secondary electron emission amplifying device.
