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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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