US PATENT SUBCLASS 33 / 716
.~.~ Including electrical signal means

Current as of: June, 1999
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33 /   HD   GEOMETRICAL INSTRUMENTS

700  DF  DISTANCE MEASURING {13}
713  DF  .~ Sounding type {6}
716.~.~ Including electrical signal means

DEFINITION

Classification: 33/716

Including electric signal means:

(under subclass 713) Subject matter having an electric circuit which is actuated when a fluid is contacted resulting in a visual or audible signal.