US PATENT SUBCLASS 434 / 175
.~.~.~ Letter-bearing elements slidable between different grooves

Current as of: June, 1999
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434 /   HD   EDUCATION AND DEMONSTRATION

156  DF  LANGUAGE {6}
167  DF  .~ Spelling, phonics, word recognition, or sentence formation {8}
172  DF  .~.~ Letter-bearing elements (e.g., cards, blocks, etc.) selectively aligned to form word or sentence {3}
175.~.~.~ Letter-bearing elements slidable between different grooves

DEFINITION

Classification: 434/175

Letter-bearing elements slidable between different grooves:

(under subclass 172) 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.