US PATENT SUBCLASS 324 / 207.2
.~.~.~ Hall effect

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

200  DF  MAGNETIC {24}
207.11  DF  .~ Displacement {7}
207.13  DF  .~.~ Having particular sensor means {4}
207.2.~.~.~ Hall effect