US PATENT SUBCLASS 73 / 491
.~ With means for retaining reading

Current as of: June, 1999
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73 /   HD   MEASURING AND TESTING

488  DF  SPEED, VELOCITY, OR ACCELERATION {29}
491.~ With means for retaining reading {1}
492  DF  .~.~> Maximum acceleration

DEFINITION

Classification: 73/491

(under subclass 488) Apparatus including means whereby indicia of the speed responsive device hold a reading.