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Class Information
Number: 434/346
Name: Education and demonstration > Question or problem eliciting response > Correctness of response indicated to examine by self-operating or examinee actuated means > Correctness of response indicated when examinee physically alters element other than by marking it
Description: Subject matter wherein the examinee responds to a question or problem by altering an element in some way other than by marking it (e.g., by abrading, erasing, puncturing, etc.) and the correctness of the response is revealed as the result of such alteration.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7516180 |
System and method for providing instructor services using a plurality of client workstations connected to a central control station |
Apr. 7, 2009 |
| 7252510 |
Entertainment device and method of using the same |
Aug. 7, 2007 |
| 6957038 |
Self-scoring method and apparatus for early self-screening of neurological disease |
Oct. 18, 2005 |
| 6879805 |
Test form having a removable opaque layer, and method and apparatus for printing on the form |
Apr. 12, 2005 |
| 6739874 |
Electronic educational toy appliance teaching letters words and numbers |
May. 25, 2004 |
| 6210171 |
Method and apparatus for multiple choice testing system with immediate feedback for correctness of response |
Apr. 3, 2001 |
| 5618180 |
Method of teaching using a computer |
Apr. 8, 1997 |
| 5447439 |
Interactive story book using stickers and a method of teaching |
Sep. 5, 1995 |
| 5281146 |
Educational device and method |
Jan. 25, 1994 |
| 5254376 |
Graphic communication medium |
Oct. 19, 1993 |
| 5243173 |
Machine readable form and method |
Sep. 7, 1993 |
| 5123658 |
Card game |
Jun. 23, 1992 |
| 5037302 |
Educational toy with a repairable defect for teaching humanistic values to a child |
Aug. 6, 1991 |
| 4964642 |
Variably scored skill game |
Oct. 23, 1990 |
| 4868020 |
Rub and show graphics |
Sep. 19, 1989 |
| 4830405 |
Method of validating data entered on a ticket and the like |
May. 16, 1989 |
| 4702497 |
Method of encoding a symbol or message on a plastic material and an article on which a symbol has been so encoded |
Oct. 27, 1987 |
| 4687203 |
Scratch and smell game |
Aug. 18, 1987 |
| 4508513 |
Game card device |
Apr. 2, 1985 |
| 4493655 |
Radio-controlled teaching device |
Jan. 15, 1985 |
| 4487585 |
Educational toy having fragrance association means |
Dec. 11, 1984 |
| 4466614 |
Game with selectable playing areas |
Aug. 21, 1984 |
| 4354845 |
Identification structure for games and educational use and for other use |
Oct. 19, 1982 |
| 4337051 |
Self-scoring test with non-disclosed key |
Jun. 29, 1982 |
| 4299637 |
Method of making a game ticket |
Nov. 10, 1981 |
| 4109047 |
Rub-on security cards |
Aug. 22, 1978 |
| 4097068 |
Feed-back communication card |
Jun. 27, 1978 |
| 4095824 |
Secure contest card |
Jun. 20, 1978 |
| 3938993 |
Xerographic method for making a responsive answer system |
Feb. 17, 1976 |
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