|
| US4205667 | 4 Abr 1978 | 3 Jun 1980 | Medical Specialties, Inc. | Cervical collar |
| US4987891 | 30 Dic 1988 | 29 Ene 1991 | Medical Specialties, Inc. | Emergency cervical collar |
| US5520619 | 22 Feb 1994 | 28 May 1996 | Ambu International A/S | Adjustable cervical collar |
| US5588957 | 15 Ago 1995 | 31 Dic 1996 | Ambu International A/S | Cervical collar |
| US5728054 | 24 May 1996 | 17 Mar 1998 | Ambu International A/S | Adjustable cervical collar |
| US5797863 | 29 Nov 1996 | 25 Ago 1998 | Ambu International A/S | Collapsible cervical collar |
| US5993403 | 13 Mar 1998 | 30 Nov 1999 | Ambu International A/S | Adjustable cervical collar |
| US6036664 | 7 Jun 1995 | 14 Mar 2000 | Ambu International A/S | Automatic adjustable cervical collar |
| US6090058 | 30 Dic 1997 | 18 Jul 2000 | Laerdal Medical Corporation | Multiple-size cervical collar |
| US6245033 | 29 Nov 1999 | 12 Jun 2001 | Ambu International A/S | Adjustable cervical collar |
| US6726643 | 13 Mar 2000 | 27 Abr 2004 | Ambu International A/S | Automatic adjustable cervical collar |
| USD393718 | 23 Dic 1996 | 21 Abr 1998 | Laerdal Medical Corporation | Cervical collar |
| USD644331 | 27 Oct 2010 | 30 Ago 2011 | Life Core Technologies, LLC | Cervical immobilization collar |
| USD644332 | 27 Oct 2010 | 30 Ago 2011 | Life Core Technologies, LLC | Cervical immobilization collar |
| USRE36745 | 13 Ene 1999 | 20 Jun 2000 | Ambu Inc. | Extrication cervical collar with adjustable supports |