US PATENT SUBCLASS 73 / 335.03
.~.~.~.~ Impedance

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

23.2  DF  GAS ANALYSIS {15}
29.01  DF  .~ Moisture content or vapor pressure {4}
29.02  DF  .~.~ Hygrometer {4}
335.02  DF  .~.~.~ With electric circuitry or electric circuit component detail {1}
335.03.~.~.~.~ Impedance {2}
335.04  DF  .~.~.~.~.~> Capacitance
335.05  DF  .~.~.~.~.~> Resistance or conductivity

DEFINITION

Classification: 73/335.03

Impedance:

(under subclass 335.02) Subject matter wherein the parameter is the impedance of the circuit or the circuit component.

SEE OR SEARCH CLASS

324, Electricity: Measuring and Testing,

600+, for an apparatus or process for determining the moisture content of a material by measuring impedance, admittance or a related quantity of the material and particularly subclasses 664 and 689 for determining the moisture content of a material by measuring the resistance or the conductivity of a material in order to measure its moisture content.