US PATENT SUBCLASS 40 / 544
.~.~ Electroluminescent

Current as of: June, 1999
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40 /   HD   CARD, PICTURE, OR SIGN EXHIBITING

541  DF  ILLUMINATED SIGN {13}
542  DF  .~ Luminescent {2}
544.~.~ Electroluminescent

DEFINITION

Classification: 40/544

Electroluminescent:

(under subclass 542) Sign in which the elements of the indicia are rendered visible by direct electrical excitation.

SEE OR SEARCH CLASS

257, Active Solid-State Devices (e.g., Transistors, Solid-State Diodes),

13, subclasses 79-103, and subclass 918 for incoherent light emitting injection luminescent devices.