|
| US4094315 | 29 Oct 1976 | 13 Jun 1978 | | Ear plug |
| US4219018 | 29 Mar 1979 | 26 Ago 1980 | Norton Company | Earplug unit with inserter and tie |
| US4314553 | 8 Ago 1979 | 9 Feb 1982 | Bilsom AB | Earplug and earplug set |
| US4406282 | 20 Feb 1981 | 27 Sep 1983 | | Earplug for an underwater diver |
| US4461290 | 29 Nov 1982 | 24 Jul 1984 | Cabot Corporation | Hearing protectors |
| US4490857 | 12 Oct 1982 | 1 Ene 1985 | | Band earplug |
| US4582053 | 6 Ene 1984 | 15 Abr 1986 | | Acoustic ear plug |
| US4706682 | 9 Abr 1987 | 17 Nov 1987 | Minnesota Mining and Manufacturing Company | External ear canal electrode to be placed proximate the tympanic membrane |
| US5715850 | 22 May 1996 | 10 Feb 1998 | Toddling Products (Proprietary) Limited | Personal ear cleaning device |
| US6367578 | 11 Ago 2000 | 9 Abr 2002 | | Hearing aid sound seal device |
| US6830124 | 23 Abr 2003 | 14 Dic 2004 | | Ear plug |
| USD242743 | 28 Ago 1975 | 14 Dic 1976 | | Ear plug |
| USD245202 | 3 Sep 1975 | 26 Jul 1977 | | Ear protection plug set |
| USD253723 | 6 Feb 1978 | 18 Dic 1979 | | Ear plug |
| USD264249 | 10 Sep 1979 | 4 May 1982 | | Ear plug |
| USD265129 | 10 Sep 1979 | 22 Jun 1982 | | Ear plug with flanges |
| USD298356 | 22 Ago 1985 | 1 Nov 1988 | Cabot Corporation | Earplug or similar article |
| USD303014 | 4 May 1987 | 22 Ago 1989 | Cabot Corporation | Earplug or similar article |
| USD369655 | 15 Abr 1994 | 7 May 1996 | Cabot Safety Intermediate Corporation | Hearing protective earplug |
| USD375550 | 15 Abr 1994 | 12 Nov 1996 | Cabot Safety Intermediate Corporation | Hearing protective earplug |
| USD375551 | 15 Abr 1994 | 12 Nov 1996 | Cabot Safety Intermediate Corporation | Hearing protective earplug |
| USD378127 | 25 Sep 1995 | 18 Feb 1997 | | Ear plug |
| USD405880 | 1 Nov 1996 | 16 Feb 1999 | | Ear plug assembly |
| USD427304 | 8 Oct 1998 | 27 Jun 2000 | Moldex-Metric, Inc | Earplug |
| USD434139 | 17 Sep 1999 | 21 Nov 2000 | 3M Innovative Properties Company | Earplug |
| USD436164 | 17 Sep 1999 | 9 Ene 2001 | 3M Innovative Properties Company | Earplug |
| USD590055 | 28 Abr 2008 | 7 Abr 2009 | Just Plugs, LLC | Ear plug |
| USD591416 | 30 May 2008 | 28 Abr 2009 | | Ear plug |
| USD606972 | 12 Mar 2009 | 29 Dic 2009 | SJS & Sons, Inc. | Audio headset |
| USD611934 | 12 Mar 2009 | 16 Mar 2010 | SJS & Sons, Inc. | Audio headset |
