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Class Information
Number: 434/348
Name: Education and demonstration > Question or problem eliciting response > Correctness of response indicated to examine by self-operating or examinee actuated means > Correct answer hidden until examinee moves element
Description: Subject matter wherein the correct answer is revealed after the examinee moves some element.
Sub-classes under this class:
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 |
| 7438555 |
Teaching aid |
Oct. 21, 2008 |
| 7429045 |
Method and device for playing a game in which values of game pieces are gradually revealed |
Sep. 30, 2008 |
| 7318052 |
Knowledge transfer evaluation |
Jan. 8, 2008 |
| 6879805 |
Test form having a removable opaque layer, and method and apparatus for printing on the form |
Apr. 12, 2005 |
| 6652286 |
Teaching device |
Nov. 25, 2003 |
| 6210171 |
Method and apparatus for multiple choice testing system with immediate feedback for correctness of response |
Apr. 3, 2001 |
| 6053741 |
Flash card holder and learning method |
Apr. 25, 2000 |
| 5895050 |
Question and answer game |
Apr. 20, 1999 |
| 5820382 |
Multifilication quizzer |
Oct. 13, 1998 |
| 5797601 |
User selective solution system and method for flashcards, puzzles, and the like |
Aug. 25, 1998 |
| 5701696 |
Card holder |
Dec. 30, 1997 |
| 5618180 |
Method of teaching using a computer |
Apr. 8, 1997 |
| 5447439 |
Interactive story book using stickers and a method of teaching |
Sep. 5, 1995 |
| 5403014 |
Game and method of play |
Apr. 4, 1995 |
| 5334021 |
Masking apparatus for use in authoring, formatting and presenting information to be learned or memorized |
Aug. 2, 1994 |
| 5288075 |
Image recognition game apparatus |
Feb. 22, 1994 |
| 5281146 |
Educational device and method |
Jan. 25, 1994 |
| 5243173 |
Machine readable form and method |
Sep. 7, 1993 |
| 5161978 |
Method for authoring, formating and presenting information to be learned or memorized |
Nov. 10, 1992 |
| 5160267 |
Programmed learning device |
Nov. 3, 1992 |
| 5087043 |
Interactive audio-visual puzzle |
Feb. 11, 1992 |
| 5056793 |
Picture identification game |
Oct. 15, 1991 |
| 4964642 |
Variably scored skill game |
Oct. 23, 1990 |
| 4770638 |
Educational aid having an answer concealing element |
Sep. 13, 1988 |
| 4731027 |
Educational teaching toy |
Mar. 15, 1988 |
| 4693694 |
Toy with moving screen |
Sep. 15, 1987 |
| 4678188 |
Question and answer game structure particularly for use in a restaurant or the like |
Jul. 7, 1987 |
| 4674433 |
Correct answer displaying device for arithmetic practicing unit |
Jun. 23, 1987 |
| 4657248 |
Question-and-answer game |
Apr. 14, 1987 |
| 4634385 |
Teaching wheels |
Jan. 6, 1987 |
| 4573928 |
Teaching toy |
Mar. 4, 1986 |
| 4561658 |
Math matching game |
Dec. 31, 1985 |
| 4544360 |
Book reference list |
Oct. 1, 1985 |
| 4487418 |
Educational game device |
Dec. 11, 1984 |
| 4445867 |
Educational board game |
May. 1, 1984 |
| 4377383 |
Teaching apparatus with system for repetitive review of information |
Mar. 22, 1983 |
| 4349346 |
Method of making slide calculator |
Sep. 14, 1982 |
| 4311469 |
Display board for educational exercises |
Jan. 19, 1982 |
| 4262432 |
Study device |
Apr. 21, 1981 |
| 4258477 |
Multiplication study device |
Mar. 31, 1981 |
| 4194301 |
Device for use in paired associate learning |
Mar. 25, 1980 |
| 4021940 |
Educational device |
May. 10, 1977 |
| 3930673 |
Lottery ticket |
Jan. 6, 1976 |
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