US PATENT SUBCLASS 430 / 25
.~ With light-absorbing matrix on faceplate

Current as of: June, 1999
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430 /   HD   RADIATION IMAGERY CHEMISTRY: PROCESS, COMPOSITION, OR PRODUCT THEREOF

23  DF  PRODUCING CATHODE-RAY TUBE OR ELEMENT THEREOF {6}
25.~ With light-absorbing matrix on faceplate

DEFINITION

Classification: 430/25

With light-absorbing matrix on faceplate:

(under subclass 23) Processes wherein the contrast of the phosphoric screen, e.g., is improved by surrounding the phosphoric dots or stripes with a light absorbing faceplate.