(under subclass 523) Subject matter wherein the discharge device includes a secondary electron emissive electrode which emits secondary electrons as a result of the photoelectrons from a photocathode hitting the secondary electron emissive electrode.
SEE OR SEARCH THIS CLASS, SUBCLASS:
103, for secondary emitter type electric lamp or discharge device.
399+, for a cathode-ray tube with a secondary emissive electrode.
538, for gas phototubes wherein the ionized gas is an electron secondary emission multiplier.
SEE OR SEARCH CLASS
250, Radiant Energy, 207, for a photocell controlled circuit with an electron multiplier.
315, Electric Lamp and Discharge Devices: Systems,
11, for cathode-ray tube circuits with radiant energy sensitive control means having a secondary emission stage in the cathode-ray tube, and subclass 12.1 for a cathode-ray tube with a secondary emission stage in the cathode-ray tube.
329, Demodulators,
359, for such a device with secondary emission.
330, Amplifiers,
42, for an amplifier with a secondary electron emission amplifying device.
