|
| US4027341 | 12 Feb 1976 | 7 Jun 1977 | Exel OY | Juncture arrangement between the bow of a hearing protection means and a protective helmet |
| US4316290 | 18 Jul 1980 | 23 Feb 1982 | Norton Company | Ear muff accessory for safety hard hat |
| US4347631 | 18 Jul 1980 | 7 Sep 1982 | Norton Company | Ear muff accessory for safety hard hat |
| US4357711 | 29 Ene 1981 | 2 Nov 1982 | | Two way radio safety helmet |
| US4944361 | 29 Ago 1988 | 31 Jul 1990 | AB Kompositprodukter S.K.-F.M. | Acoustic ear muff |
| US5046192 | 26 Sep 1989 | 10 Sep 1991 | Ryder International Corporation | Headset sun visor |
| US5068923 | 24 Oct 1990 | 3 Dic 1991 | Milmas AB | Noise attenuator attachment arm |
| US5621923 | 2 Feb 1996 | 22 Abr 1997 | | Interface apparatus for adapting a visor and a chin protector to standard bicycle helments and the like |
| US6056082 | 9 May 1997 | 2 May 2000 | 3M Innovative Properties Company | Ergonomic banded ear plug |
| US6115846 | 30 Nov 1998 | 12 Sep 2000 | | Headgear combined with a fan, electronic communication device and binoculars |
| US6546264 | 4 Oct 1999 | 8 Abr 2003 | | Helmet headphones |
| US6550064 | 24 Ene 2002 | 22 Abr 2003 | | Ear shield apparatus |
| US6854466 | 31 Ene 2002 | 15 Feb 2005 | AB Kompositprodukter Vikmanshyttan | Method for producing a hearing protection cup, and tool used for its production |
| US8028344 | 8 Jun 2007 | 4 Oct 2011 | Artisent, Inc. | Hinged attachment of headgear to a helmet |
| US8055006 | 23 Jun 2009 | 8 Nov 2011 | Koss Corporation | Soft-opening hinge and headphone including same |
| US8213647 | 20 Mar 2006 | 3 Jul 2012 | Sony Ericsson Mobile Communications AB | Electroacoustic device |
| USD276855 | 4 Ago 1982 | 25 Dic 1984 | Cabot Corporation | Earmuff cup or similar article |
| USD291690 | 4 Mar 1985 | 1 Sep 1987 | Talbot Toys Ltd. | Headphone |
| USD479224 | 20 Abr 2001 | 2 Sep 2003 | Vigor Sport | Detachable helmet-mounted communications system |
