(under subclass 86) Subject matter wherein the magnetically controlled space discharge device includes a secondary electron emissive electrode.
(1) Note. The secondary electron emission electrode, for example, may be (1) an auxiliary electrode, or (2) the
cathode electrode, which cathode may be designed to produce electrons by thermionic and secondary emission or by secondary emission alone (cold cathode), or (3) the anode or collector electrode.
SEE OR SEARCH THIS CLASS, SUBCLASS:
79, for beam tube oscillators of the negative resistance type wherein the negative resistance effect may be produced by secondary electron emission means.
133, for negative resistance or negative transconductance type oscillators in general utilizing the phenomenon of secondary electron emission (e.g., dynatron oscillators).
184, for oscillators utilizing a secondary electron emission discharge device of particular construction. SEE OR SEARCH CLASS
313, Electric Lamp and Discharge Devices,
103+, for the structure of space discharge devices including secondary electron emissive electrodes. See the search notes to subclasses 103+ of Class 313 as to the further fields of search for secondary electron emissive devices or systems utilizing such devices.
315, Electric Lamp and Discharge Devices: Systems,
39.63, for magnetically controlled space discharge device structures (e.g., magnetrons) having secondary electron emitter means.
333, Wave Transmission Lines and Networks,
213+, for negative resistance networks which networks may include a negative resistance device having a secondary emissive electrode.
