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| US4216964 | 26 Ene 1979 | 12 Ago 1980 | | Puzzle game | | US5282632 | 31 Dic 1992 | 1 Feb 1994 | | Memory block game apparatus | | US7530573 | 15 May 2006 | 12 May 2009 | Mattel, Inc. | Memory and assembly game | | USD444823 | 29 Feb 2000 | 10 Jul 2001 | Wesco | Modular game piece | | USD445141 | 29 Feb 2000 | 17 Jul 2001 | Wesco | Modular game piece |
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