|
| US4118813 | 10 Nov 1976 | 10 Oct 1978 | | Sleep training pillow for the prevention of snoring |
| US4285081 | 22 Oct 1979 | 25 Ago 1981 | | Device for recumbency of the head and neck |
| US4432107 | 1 Oct 1981 | 21 Feb 1984 | | Neck support rest |
| US4712833 | 16 Oct 1986 | 15 Dic 1987 | Swanson Brothers, Inc. | Seat cushion for preventing slouching of an infant or weakened adult |
| US4726087 | 22 Ago 1986 | 23 Feb 1988 | Span-America Medical Systems, Inc. | Contoured-head and neck foam pillow |
| US4759089 | 28 Abr 1987 | 26 Jul 1988 | | Cervical pillow |
| US4768246 | 17 Jun 1987 | 6 Sep 1988 | | Apertured orthopedic head pillow |
| US4805603 | 13 Jul 1988 | 21 Feb 1989 | | Inflatable cervical traction pillow |
| US4832007 | 12 Abr 1988 | 23 May 1989 | Span-America Medical Systems, Inc. | Traction pillow and method |
| US4922894 | 9 Oct 1987 | 8 May 1990 | | Cervical fascia release board |
| US5025518 | 6 Sep 1989 | 25 Jun 1991 | | Orthopedic head pillow |
| US5519907 | 28 Jul 1994 | 28 May 1996 | | Device for relaxing the skeletal muscle system, in particular for the neck and lumbar vertebrae |
| US6202232 | 17 Nov 1998 | 20 Mar 2001 | | Pillow |
| US6381784 | 17 Sep 1999 | 7 May 2002 | Banyan Licensing LLC | Pillow with improved head traction |
| US7032264 | 10 Mar 2005 | 25 Abr 2006 | Kabushiki Kaisha Dokuta Eru | Pillow having sloping partition |
