US PATENT SUBCLASS 434 / 344
.~.~.~ Correct answer illuminated

Current as of: June, 1999
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434 /   HD   EDUCATION AND DEMONSTRATION

322  DF  QUESTION OR PROBLEM ELICITING RESPONSE {8}
327  DF  .~ Correctness of response indicated to examine by self-operating or examinee actuated means {12}
335  DF  .~.~ By means including electrical component {8}
344.~.~.~ Correct answer illuminated

DEFINITION

Classification: 434/344

Correct answer illuminated:

(under subclass 335) Subject matter wherein the correct answer to a question or problem is present on a carrier surface but is not visible to an examinee until the correct response is selected, at which time the correct answer is illuminated and revealed.