US PATENT SUBCLASS 33 / 362
.~.~.~ Inductor rotated or vibrated

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

300  DF  INDICATOR OF DIRECTION OF FORCE TRAVERSING NATURAL MEDIA {23}
355 R  DF  .~ Magnetic field responsive {6}
361  DF  .~.~ Electro-magnet or inductor (e.g., flux valve, etc.) {1}
362.~.~.~ Inductor rotated or vibrated

DEFINITION

Classification: 33/362

(under subclass 361) Device including an inductor, i.e., armature and means to rotate it, or to vibrate it, through the magnetic field under investigation.