|
| US4827915 | 21 Sep 1988 | 9 May 1989 | | Spring loaded cervical collar |
| US4969453 | 19 Jul 1988 | 13 Nov 1990 | | Cervical collar |
| US5520619 | 22 Feb 1994 | 28 May 1996 | Ambu International A/S | Adjustable cervical collar |
| US5588957 | 15 Aug 1995 | 31 Dec 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 Aug 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 Dec 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 Apr 2004 | Ambu International A/S | Automatic adjustable cervical collar |
| US6770046 | 29 Oct 2002 | 3 Aug 2004 | | Minimally invasive extrication cervical collar |
| US6913584 | 22 May 2002 | 5 Jul 2005 | Ambu Inc. | Cervical immobilizing device |
| US7297127 | 19 Mar 2002 | 20 Nov 2007 | Ambu Inc. | Cervical immobilization device |
| USD393718 | 23 Dec 1996 | 21 Apr 1998 | Laerdal Medical Corporation | Cervical collar |
| USD644331 | 27 Oct 2010 | 30 Aug 2011 | Life Core Technologies, LLC | Cervical immobilization collar |
| USD644332 | 27 Oct 2010 | 30 Aug 2011 | Life Core Technologies, LLC | Cervical immobilization collar |
| USD647623 | 6 Aug 2010 | 25 Oct 2011 | Ossur HF | Height adjustment mechanism for cervical collar |
| USRE36745 | 13 Jan 1999 | 20 Jun 2000 | Ambu Inc. | Extrication cervical collar with adjustable supports |