|
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| US4073017 | 26 Oct 1976 | 14 Feb 1978 | | Portable playpen |
| US4376318 | 19 Feb 1980 | 15 Mar 1983 | | Portable playpen |
| US4571904 | 6 Oct 1983 | 25 Feb 1986 | Allegheny-Singer Research Corporation | Patient enclosure |
| US4811437 | 26 Jun 1987 | 14 Mar 1989 | Graco Metal Products, Inc. | Foldable playyard |
| US4899496 | 29 Oct 1987 | 13 Feb 1990 | | Portable child enclosure |
| US4921369 | 12 Sep 1988 | 1 May 1990 | | Connector for portable furniture including a bed and a child enclosure |
| US5279006 | 28 Aug 1992 | 18 Jan 1994 | | Play yards for infants |
| US5363521 | 30 Dec 1992 | 15 Nov 1994 | Fisher-Price, Inc. | Collapsible playpen |
| US5544372 | 14 Nov 1994 | 13 Aug 1996 | Fisher-Price, Inc. | Ball and socket joint, useful with collapsible playpens |
| US5826285 | 10 Sep 1996 | 27 Oct 1998 | Kolcraft Enterprises, Inc. | Play yard |
| US5867851 | 10 Jun 1997 | 9 Feb 1999 | Kolcraft Enterprises, Inc. | Play yard |
| US6250837 | 25 Sep 1998 | 26 Jun 2001 | Kolcraft Enterprises, Inc. | Rail joint |
| US7404219 | 8 Jun 2007 | 29 Jul 2008 | Graco Children's Products Inc. | Portable infant bed with side wall ventilation |
| US7543870 | 8 Dec 2004 | 9 Jun 2009 | | Insert apparatus for a preexisting cart |
| US7752693 | 20 Mar 2007 | 13 Jul 2010 | Graco Children's Products Inc. | Mattress structure for contained child play area |
| USD304523 | 8 Dec 1987 | 14 Nov 1989 | Graco Metal Products Inc. | Foldable playyard |
| USD339922 | 7 Feb 1992 | 5 Oct 1993 | | Convertible play pen |
| USD347092 | 9 Jun 1992 | 17 May 1994 | | Playpen for cats |
