US PATENT SUBCLASS 125 / 30.01
PRECIOUS STONE WORKING

Current as of: June, 1999
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125 /   HD   STONE WORKING

30.01PRECIOUS STONE WORKING {1}
30.02  DF  .~> Wire drawing die making

DEFINITION

Classification: 125/30.01

PRECIOUS STONE WORKING:

(under the class definition) Subject matter for working

various minerals, such as diamond, emerald, ruby, or sapphire, valued for their rarity or appearance.

SEE OR SEARCH CLASS

29, Metal Working,

25.35, for piezoelectric device making.

175, Boring or Penetrating the Earth,

434, for an earth boring bit which includes a diamond on its cutting edge.

356, Optics: Measuring and Testing, 30, which includes claims for nominal cutting of crystal to prepare it for optical examination.