US PATENT SUBCLASS 427 / 158
.~ Optical brightening

Current as of: June, 1999
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427 /   HD   COATING PROCESSES

157  DF  FLUORESCENT OR PHOSPHORESCENT COATING {1}
158.~ Optical brightening

DEFINITION

Classification: 427/158

(under subclass 157) Processes wherein the coating is intended to brighten the base material.

SEE OR SEARCH THIS CLASS, SUBCLASS:

157, for marking clothing to be laundered for identification.