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| US4417732 | 8 May 1981 | 29 Nov 1983 | | Electrical construction game | | US5090701 | 10 Jul 1991 | 25 Feb 1992 | | Jigsaw puzzle | | US6802757 | 1 May 2003 | 12 Oct 2004 | The First Years, Inc. | Developmental toy | | US7731558 | 15 Ago 2007 | 8 Jun 2010 | | Illuminated toy building structures | | US8191895 | 4 Ago 2009 | 5 Jun 2012 | | Color by symbol picture puzzle kit | | USD245528 | 17 Sep 1975 | 23 Ago 1977 | | Butterfly puzzle |
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