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Class Information
Number: 434/175
Name: Education and demonstration > Language > Spelling, phonics, word recognition, or sentence formation > Letter-bearing elements (e.g., cards, blocks, etc.) selectively aligned to form word or sentence > Letter-bearing elements slidable between different grooves
Description: Subject matter including letter-bearing components slidable from one groove to another groove associated therewith, e.g., blocks disposed in grooves in the shape of a T and slidable from the horizontal portion of the T into the vertical stem portion or vice versa.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7351062 |
Educational devices, systems and methods using optical character recognition |
Apr. 1, 2008 |
| 6551110 |
Visual educational device for teaching literacy |
Apr. 22, 2003 |
| 6491524 |
Reading device and methods of using same to teach and learn reading |
Dec. 10, 2002 |
| 6171111 |
Educational device for illustrating mathematical relationships |
Jan. 9, 2001 |
| 6171110 |
Teaching aid for developing a child's intelligence |
Jan. 9, 2001 |
| 5993217 |
Learning apparatus |
Nov. 30, 1999 |
| 5913771 |
End board for supporting a child's bed having moveable pieces slidably mounted thereon |
Jun. 22, 1999 |
| 5149097 |
Crossword puzzle aid |
Sep. 22, 1992 |
| 5018728 |
Name forming game apparatus and method |
May. 28, 1991 |
| 4682955 |
Educational toy |
Jul. 28, 1987 |
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