US PATENT SUBCLASS 216 / 30
.~ Treating stone (e.g., marble, etc.)

Current as of: June, 1999
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216 /   HD   ETCHING A SUBSTRATE: PROCESSES

28  DF  FORMING OR TREATING AN ORNAMENTED ARTICLE {4}
30.~ Treating stone (e.g., marble, etc.)

DEFINITION

Classification: 216/30

Treating stone (e.g., marble, etc.):

(under subclass 28) Process wherein stone is treated, to produce a decorative effect thereon, e.g., marble, etc.