Referenced by|
| US4202134 | 1 Dec 1977 | 13 May 1980 | Marvin Glass & Associates | Water toy | | US4215509 | 10 Jul 1978 | 5 Aug 1980 | Design Alliance, Inc. | Animated toy block set | | US5088598 | 25 Apr 1990 | 18 Feb 1992 | Daicel Chemical Industries, Ltd. | Plastic-model kit | | US5171151 | 24 Jan 1992 | 15 Dec 1992 | Mattel, Inc. | Foam sculpting toy | | US5435518 | 21 Oct 1993 | 25 Jul 1995 | Daicel Chemical Industries, Ltd. | Plastic-model kit | | US5979895 | 9 Feb 1998 | 9 Nov 1999 | | Method and apparatus for administering psychological tests | | US6234858 | 9 Apr 1999 | 22 May 2001 | | Resilient crushable foam objects with interchangeable parts | | US7217132 | 5 May 2004 | 15 May 2007 | | Educational medium for teaching children to interact with and recognize objects |
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