US PATENT SUBCLASS 73 / 617
.~.~.~.~ Having mechanical delay or mechanical blocking

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}
617.~.~.~.~ Having mechanical delay or mechanical blocking

DEFINITION

Classification: 73/617

Having mechanical delay or mechanical blocking:

(under subclass 609) Subject matter wherein the undesired signals or indication thereof are eliminated or blocked by mechanical means, as a solid delay line or masking means on a cathode-ray tube.

SEE OR SEARCH THIS CLASS, SUBCLASS:

644, for transducer-to-object coupling means which may serve as a mechanical delay line.