US PATENT SUBCLASS 73 / 644
.~.~.~.~ Having significant coupling means

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}
644.~.~.~.~ Having significant coupling means

DEFINITION

Classification: 73/644

Having significant coupling means:

(under subclass 632) Subject matter having significant means between the transducer and test body of coupling the sonic waves to or from the test body, as a circulated liquid couplant, wear shoe, heat resistive shoe, delay block, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:

617, for delay or blocking means in a measuring or testing combination.