US PATENT SUBCLASS 178 / 18.11
.~.~.~ With illumination

Current as of: June, 1999
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178 /   HD   TELEGRAPHY

2 R  DF  SYSTEMS {21}
18.01  DF  .~ Position coordinate determination for writing (e.g., writing digitizer pad, stylus, or circuitry) {4}
18.03  DF  .~.~ Writing digitizer pad {6}
18.11.~.~.~ With illumination

DEFINITION

Classification: 178/18.11

With illumination:

(under subclass 18.03) Subject matter including means to brighten the sensing surface of the tablet.

SEE OR SEARCH THIS CLASS, SUBCLASS:

18.1, for a digitizing pad having display.

SEE OR SEARCH CLASS

362, Illumination,

227+, and 257+ for single or plural light sources for general illumination.

364, Electrical Computers and Data Processing Systems, 709.01+, for an electric digital calculating computer using specialized input.