US PATENT SUBCLASS 33 / 333
.~ Structurally installed including relation to feature thereof

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

300  DF  INDICATOR OF DIRECTION OF FORCE TRAVERSING NATURAL MEDIA {23}
333.~ Structurally installed including relation to feature thereof {1}
334  DF  .~.~> Hand implement (e.g., tool, rifle, camera, etc.)

DEFINITION

Classification: 33/333

(under subclass 300) Device including means relating it to a peculiarity of a device serving some function other than that of indicating direction.