US PATENT SUBCLASS 434 / 347
.~.~ Correct answer displayed on side of element opposite side displaying question or problem

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}
347.~.~ Correct answer displayed on side of element opposite side displaying question or problem

DEFINITION

Classification: 434/347

Correct answer displayed on side of element opposite side displaying question or problem:

(under subclass 327) Subject matter wherein a question or problem is presented on one side of an element (e.g.., a sheet, etc.) and the correct answer appears on the reverse side of the element.