US PATENT SUBCLASS 73 / 628
.~.~.~.~ Having plural sonic type transmitters or receivers tranducers

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}
627  DF  .~.~.~ By reflected wave {2}
628.~.~.~.~ Having plural sonic type transmitters or receivers tranducers

DEFINITION

Classification: 73/628

Having plural sonic type transmitters or receivers transducers:

(under subclass 627) Subject matter wherein more than one transmitter or receiver is provided.

(1) Note. The additional transducer may function other than to obtain information from the test body, as to improve coupling by eliminating bubbles.