US PATENT SUBCLASS 451 / 74
.~ Graining box
Current as of: June, 1999
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DEFINITION
Classification: 451/74
Graining box:
(under subclass 64) Abrading machine comprising an open work receiving receptacle containing loose abrasive material overlying or underlying the work and which by relative movement of the work or the receptacle, or both, is caused to produce, upon a face of the work, a grained surface suitable for surface printing.
SEE OR SEARCH THIS CLASS, SUBCLASS:
104+, and 113, for an immersion-type abrader.
SEE OR SEARCH CLASS
29, Metal Working,
90.01+, for a burnishing apparatus or process.
209, Classifying, Separating, and Assorting Solids,
233+, for a solid material sifter and subclasses 422+ for stratifier.
