US PATENT SUBCLASS 73 / 335.05
.~.~.~.~.~ Resistance or conductivity

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  DF  .~.~.~.~ Impedance {2}
335.05.~.~.~.~.~ Resistance or conductivity

DEFINITION

Classification: 73/335.05

Resistance or conductivity:

(under subclass 335.03) Subject matter wherein the parameter is either resistance or conductivity.

SEE OR SEARCH CLASS

324, Electricity: Measuring and Testing,

691+, for an apparatus for determining the moisture content of a material by measuring the resistance or the conductivity of the material.

338, Electrical Resistors,

35, for an electrical resistor whose resistance value is responsive to humidity or change in humidity.