US PATENT SUBCLASS 73 / 641
.~.~.~.~.~ Plural sonic transmitters or receivers

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}
632  DF  .~.~.~ Sonic wave transmitter or receiver transducer {4}
633  DF  .~.~.~.~ Having transducer scanning means {4}
641.~.~.~.~.~ Plural sonic transmitters or receivers

DEFINITION

Classification: 73/641

Plural sonic transmitters or receivers:

(under subclass 633) Subject matter wherein plural sonic transmitters or receivers are scanned relative to the test body.

(1) Note. A transducer wherein discrete portions are rendered sequentially operative is deemed to constitute plural transducers for the purposes of this definition.