US PATENT SUBCLASS 708 / 309
.~.~.~ Frequency measurement


Current as of: June, 1999
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708 /   HD   ELECTRICAL COMPUTERS: ARITHMETIC PROCESSING AND CALCULATING

100  DF  ELECTRICAL DIGITAL CALCULATING COMPUTER {10}
200  DF  .~ Particular function performed {26}
300  DF  .~.~ Filtering {20}
309.~.~.~ Frequency measurement


DEFINITION

Classification: 708/309

Frequency measurement:

(under subclass 300) Subject matter where frequency determination is accomplished by first removing from a signal corrupting noise which was imposed by a transmission medium.

SEE OR SEARCH CLASS

324, Electricity: Measuring and Testing,

76.39+, for frequency measurement of cyclic current or voltage in general.

702, Data Processing: Measuring, Calibrating, or Testing

75+, for electrical frequency measurement, per se.