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Class Information
Number: 434/345
Name: Education and demonstration > Question or problem eliciting response > Correctness of response indicated to examine by self-operating or examinee actuated means > Size or shape of, or aperture in, free element cntrols indication of response correctness
Description: Subject matter wherein a freely movable element (e.g., a card, etc.) has a distinctive configuration, a perforation, or other physical characteristic which is indicative of the correct response to a question or problem.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7366646 |
Fault monitoring and notification system for automated banking machines |
Apr. 29, 2008 |
| 6768975 |
Method for simulating operation of an automated banking machine system |
Jul. 27, 2004 |
| 5759041 |
Mathematics teaching device |
Jun. 2, 1998 |
| 5634799 |
Educational apparatus |
Jun. 3, 1997 |
| 5372511 |
Educational toys |
Dec. 13, 1994 |
| 5165894 |
Educational book set and receptacle |
Nov. 24, 1992 |
| 4776802 |
Learning aid and puzzle |
Oct. 11, 1988 |
| 4526550 |
Combination system and question and answer matching game |
Jul. 2, 1985 |
| 4354842 |
System for utilizing interactive blocks to teach arithmetic |
Oct. 19, 1982 |
| 4340373 |
Spelling machine |
Jul. 20, 1982 |
| 4185400 |
Typewriter with instructional apparatus |
Jan. 29, 1980 |
| 4106216 |
Positioning system utilizing binary code |
Aug. 15, 1978 |
| 4027402 |
Novel educational toy |
Jun. 7, 1977 |
| 4024650 |
Educational toy |
May. 24, 1977 |
| 4012849 |
Educational quiz and answer toy |
Mar. 22, 1977 |
| 3986275 |
Apparatus for self-instruction |
Oct. 19, 1976 |
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