US PATENT SUBCLASS 324 / 87
.~.~ With nonlinear device (e.g., saturable reactor, rectifier), discharge device (e.g., gas tube) or lamp

Current as of: June, 1999
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324 /   HD   ELECTRICITY: MEASURING AND TESTING

76.11  DF  MEASURING, TESTING, OR SENSING ELECTRICITY, PER SE {46}
76.77  DF  .~ Phase comparison (e.g., between cyclic pulse voltage and sinusoidal current, etc.) {11}
87.~.~ With nonlinear device (e.g., saturable reactor, rectifier), discharge device (e.g., gas tube) or lamp {2}
88  DF  .~.~.~> Cathode ray
89  DF  .~.~.~> Space discharge control means (e.g., grid)

DEFINITION

Classification: 324/87

(under subclass 83) Subject matter having a lamp or space discharge device or nonlinear device.

(1) Note. The lamp and space discharge device of this subclass are of the type which are classified elsewhere (see the Search Notes below) The nonlinear device is one whose voltage-current relationship is significantly nonlinear, as, for example, a thermistor, contact rectifier, thyrite resistor, transistor, saturable reactor or nonlinear condenser.

SEE OR SEARCH CLASS

313, Electric Lamp and Discharge Devices, See the Class Definition of Class 313 for lamp and space discharge device of this subclass (324/87). See (1) Note above.