US PATENT SUBCLASS 324 / 613
.~.~ Noise

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

600  DF  IMPEDANCE, ADMITTANCE OR OTHER QUANTITIES REPRESENTATIVE OF ELECTRICAL STIMULUS/RESPONSE RELATIONSHIPS {8}
612  DF  .~ Parameter related to the reproduction or fidelity of a signal affected by a circuit under test {4}
613.~.~ Noise {1}
614  DF  .~.~.~> Signal to noise ratio or noise figure

DEFINITION

Classification: 324/613

Noise:

(under subclass 612) Subject matter wherein the evaluated parameter is representative of an unwanted electrical disturbance or a spurious signal in the circuit or substance being measured or tested.

SEE OR SEARCH CLASS

455, Telecommunications,

62, 296, and 501 for noise reduction, prevention or elimination systems.