|
| US4035940 | 8 Ene 1976 | 19 Jul 1977 | Micknel Manufacturing Inc. | Sign construction |
| US4127948 | 12 Sep 1977 | 5 Dic 1978 | Mattel, Inc. | Play desk |
| US4313727 | 30 Nov 1979 | 2 Feb 1982 | | Educational frame device having a rotatable body and rotatable symbol-bearing inserts |
| US5263866 | 3 Sep 1992 | 23 Nov 1993 | | Game board apparatus |
| US5393232 | 15 Nov 1993 | 28 Feb 1995 | | Visual aid system |
| US5476016 | 27 Oct 1993 | 19 Dic 1995 | Board of Regents of the University of Nebraska | Apparatus for annotating data on an assay medium |
| US6021593 | 5 Mar 1998 | 8 Feb 2000 | | Outdoor advertising sign |
| US7114278 | 12 May 2004 | 3 Oct 2006 | | Personalized picture frame assembly |
| US7712226 | 21 Sep 2007 | 11 May 2010 | | Grid system apparatus |
| US7934330 | 1 Ago 2005 | 3 May 2011 | | System for hanging different items on walls |
| US8015737 | 8 Feb 2001 | 13 Sep 2011 | | Barrier cover |
| USD436128 | 20 Dic 1999 | 9 Ene 2001 | WKB Wirtschafts-und Konzeptberatung GmbH | Combined blackboard and tray |
| USD594062 | 30 Oct 2007 | 9 Jun 2009 | ACCO Brands USA LLC | Display board |