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Class Information
Number: 434/347
Name: Education and demonstration > Question or problem eliciting response > Correctness of response indicated to examine by self-operating or examinee actuated means > Correct answer displayed on side of element opposite side displaying question or problem
Description: 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.










Patents under this class:

Patent Number Title Of Patent Date Issued
8702434 Card-type learning tools, learning apparatuses, programs for learning apparatuses, and recording media therefor Apr. 22, 2014
6139326 Method and testing instrument for assessing skills of an individual Oct. 31, 2000
6024578 Learning play card Feb. 15, 2000
5895050 Question and answer game Apr. 20, 1999
5797601 User selective solution system and method for flashcards, puzzles, and the like Aug. 25, 1998
5759041 Mathematics teaching device Jun. 2, 1998
5741561 Interchangeable educational writing pad Apr. 21, 1998
5439232 Educational card game Aug. 8, 1995
5207435 Word game May. 4, 1993
5186467 Sports game Feb. 16, 1993
5018976 Teaching system for enhancing the learning of sets of facts May. 28, 1991
4943054 Mental game Jul. 24, 1990
4687203 Scratch and smell game Aug. 18, 1987
4684136 Combination tic-tac-toe and question and answer game Aug. 4, 1987
4505497 Multi-colored wrapper label with readable data on both sides Mar. 19, 1985
4498869 System for teaching visual discrimination of spatially oriented subject matter Feb. 12, 1985
4493654 Educational device Jan. 15, 1985
4363628 Bank training device Dec. 14, 1982
4345315 Customer satisfaction terminal Aug. 17, 1982
4298200 Tangram game assembly Nov. 3, 1981
4182051 Entertainment and/or educational device Jan. 8, 1980
4105202 Game apparatus Aug. 8, 1978
4053994 Educational device Oct. 18, 1977
4029320 Educational game apparatus and teaching system Jun. 14, 1977
3939578 Educational board game apparatus Feb. 24, 1976











 
 
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