US PATENT SUBCLASS 73 / 612
.~.~.~.~.~ Plural gating

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

570  DF  VIBRATION {10}
584  DF  .~ By mechanical waves {13}
596  DF  .~.~ Beamed {10}
609  DF  .~.~.~ Measuring or testing system having threshold, gating, delay, or blocking means {2}
610  DF  .~.~.~.~ Electronic gating {6}
612.~.~.~.~.~ Plural gating

DEFINITION

Classification: 73/612

Plural gating:

(under subclass 610) Subject matter wherein a plurality of gating means are provided for selecting signals from different depths of the test body or for selecting signals from a selected depth for a plurality of receivers.