US PATENT SUBCLASS 33 / 364
.~.~ Liquid buoyed magnetic needle

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}
364.~.~ Liquid buoyed magnetic needle

DEFINITION

Classification: 33/364

(under subclass 355) Device wherein the means influenced by the external magnetic field is a magnetic element (i.e., compass needle) partially or wholly supported by a liquid.

SEE OR SEARCH THIS CLASS, SUBCLASS:

346+, for a liquid buoyed compass needle having means secured thereto, or operated thereby, for the sole purpose of cooperating with the liquid to produce a damping effect.