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Class Information
Number: 434/161
Name: Education and demonstration > Language > Alphabet letter formation, recognition, or sequencing > Letter displayed upon manipulation of mechanism
Description: Subject matter wherein some mechanism, such as a key having an alphabet letter associated therewith is manipulated (e.g., depressed) and as a result, a letter-bearing member is brought into viewable position.

Patents under this class:

Patent Number Title Of Patent Date Issued
8672682 Conversion of alphabetic words into a plurality of independent spellings Mar. 18, 2014
8297979 Electronic learning device with a graphic user interface for interactive writing Oct. 30, 2012
8251701 Interactive language apparatus Aug. 28, 2012
7901211 Method of treating autism using brain jogging system Mar. 8, 2011
7321360 Systems, methods and devices for efficient communication utilizing a reduced number of selectable inputs Jan. 22, 2008
6755656 Method and apparatus for adaptive handwriting teaching system Jun. 29, 2004
6215901 Pen based computer handwriting instruction Apr. 10, 2001
5114349 Element for a didactic play, and a set formed by such elements May. 19, 1992
5006000 Educational aid with substitutable magnetic items Apr. 9, 1991
4262432 Study device Apr. 21, 1981

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