G09B 1/18

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Patent/Pub #TitleFiling DateIssue/Publication DatePatent Owner
8747311 Method and apparatus for evaluating the effects of internal and external stress influencesNov 18, 10Jun 10, 14Make3Wishes, LLC
6638072 Phrase-composing device featuring interlocking collarsNov 08, 02Oct 28, 03TWISTERZ TOYS, LLC
5993218 Multi-sided word kitOct 07, 97Nov 30, 99Magnetic Poetry, Inc.
5975932 Language wheelMar 15, 99Nov 02, 99Not available