US PATENT SUBCLASS 313 / 103 R
.~ Secondary emitter type (e.g., electron multiplier)


Current as of: June, 1999
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313 /   HD   ELECTRIC LAMP AND DISCHARGE DEVICES

523  DF  PHOTOSENSITIVE {12}
103 R.~ Secondary emitter type (e.g., electron multiplier) {1}
103 CM  DF  .~.~> Channel multiplier

Unofficial Alpha Subclasses: R CM

DEFINITION

Classification: 313/103

(under the class definition) Discharge devices having a secondary emissive electrode.

(1) Note. The devices in this subclass are also known as "electron multipliers".

SEE OR SEARCH THIS CLASS, SUBCLASS:

106, for devices under the class definition provided with means to prevent secondary emission from some part of the device.

346, and the subclasses specified in the notes thereto, for secondary emissive electrodes, per se.

377, 387 and 399, for cathode-ray tubes with a secondary emissive electrode.

532+, where the discharge device includes a photosensitive electrode in addition to the secondary emissive electrode. SEE OR SEARCH CLASS

315, Electric Lamp and Discharge Devices: Systems,

39.63, for discharge devices having an electrode formed so as to provide a structure having distributed inductance and capacitance and operable in a magnetic field (e.g., magnetrons), the discharge device being provided with a secondary emissive electrode.

327, Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,

572+, for miscellaneous secondary emissive circuits.

329, Demodulators, appropriate subclasses for demodulators or detectors generally with secondary emission.

330, Amplifiers,

42, for amplifiers having a secondary emitter discharge device.

331, Oscillators,

89, for oscillator systems utilizing a magnetron type tube having a secondary electron emissive electrode, and subclass 133 for negative resistance oscillators utilizing a tube of the secondary electron emissive type.