|
| US4027113 | 10 Sep 1975 | 31 May 1977 | Nippon Gakki Seizo Kabushiki Kaisha | Headphone |
| US4138598 | 26 Ago 1977 | 6 Feb 1979 | AKG Akustische u. Kino-Gerate Gesellschaft m.b.H. | Headset construction |
| US4302635 | 4 Ene 1980 | 24 Nov 1981 | Koss Corporation | Headphone construction |
| US4542803 | 31 May 1984 | 24 Sep 1985 | | Detachable inflight headset for civil aircraft |
| US4727585 | 24 Nov 1986 | 23 Feb 1988 | Telex Communications, Inc. | Adjustable tension support band for headset |
| US4783822 | 8 Ago 1986 | 8 Nov 1988 | The United States of America as represented by the Administrator of the National Aeronautics and Space Administration | Multi-adjustable headband |
| US5835609 | 3 Jul 1996 | 10 Nov 1998 | The Gorgonz Group, Inc. | Ear protection device |
| US6499146 | 21 Dic 2001 | 31 Dic 2002 | Gray Matter Holdings LLC | Ear protection device |
| US6502247 | 18 Oct 2001 | 7 Ene 2003 | Gray Matter Holdings LLC | Apparatus and method for making an ear warmer having interior seams |
| US6502248 | 7 Nov 2001 | 7 Ene 2003 | Gray Matter Holdings LLC | Apparatus and method for making an ear warmer and an ear warmer frame |
| US6735784 | 28 Ene 2002 | 18 May 2004 | 180s, Inc. | Apparatus and method for making an ear warmer and an ear warmer frame |
| US6880174 | 30 Dic 2002 | 19 Abr 2005 | 180s, Inc. | Ear protection device |
| US6920645 | 3 Ene 2003 | 26 Jul 2005 | 180s, Inc. | Apparatus and method for making an ear warmer and an ear warmer frame |
| US6978483 | 9 Abr 2004 | 27 Dic 2005 | 180s, Inc. | Apparatus and method for making an ear warmer and an ear warmer frame |
| US7146650 | 16 Jul 2004 | 12 Dic 2006 | New York Accessory Group | Ear covers |
| US7210173 | 18 Abr 2005 | 1 May 2007 | 180s, Inc. | Ear protection device |
| US7212645 | 12 Ago 2003 | 1 May 2007 | 180s, Inc. | Ear warmer with a speaker system |
| US7222373 | 12 Ago 2003 | 29 May 2007 | 180s, Inc. | Ear warmer having a membrane forming a receptacle |
| US7317947 | 29 Abr 2004 | 8 Ene 2008 | Medtronic, Inc. | Headset recharger for cranially implantable medical devices |
| US7614091 | 3 Ene 2007 | 10 Nov 2009 | 180s, Inc. | Apparatus and method for making an ear warmer and an ear warmer frame |
| US7617543 | 6 Jun 2007 | 17 Nov 2009 | 180s, Inc. | Apparatus and method for making an ear warmer and an ear warmer frame |
| US7650649 | 12 Ago 2003 | 26 Ene 2010 | 180s, Inc. | Ear warmer having an external frame |
| US7853035 | 25 Ago 2006 | 14 Dic 2010 | Sony Corporation | Headphones and headphones placement device |
| US7962970 | 27 Oct 2003 | 21 Jun 2011 | 180s, Inc. | Ear warmer having a curved ear portion |
| US7996923 | 27 Dic 2005 | 16 Ago 2011 | 180s, Inc. | Apparatus and method for making an ear warmer and an ear warmer frame |
| US8116477 | 13 Ago 2007 | 14 Feb 2012 | Samsung Electronics Co., Ltd. | Fit adjuster for a neckband type headset |
| US8160287 | 22 May 2009 | 17 Abr 2012 | Vocollect, Inc. | Headset with adjustable headband |
| US8204267 | 23 Jun 2009 | 19 Jun 2012 | Sennheiser electronic GmbH & Co. KG | Earphone and headset |
| USD244037 | 16 Jun 1976 | 12 Abr 1977 | Audiotronics Corporation | Acoustical head-set |
| USD244300 | 11 Jun 1976 | 10 May 1977 | Koss Corporation | Headphone |
| USD541482 | 12 Mar 2004 | 24 Abr 2007 | 180s, Inc. | Ear warmer having an external frame |
| USD545001 | 12 Mar 2004 | 19 Jun 2007 | 180s, Inc. | Ear warmer having an external frame |
