Citada por|
| US5590213 | 15 Feb 1995 | 31 Dic 1996 | David Clark Company Inc. | Headset with adjustable headpad | | US5911314 | 31 Mar 1998 | 15 Jun 1999 | David Clark Company Inc. | Headset ear seal | | US6684976 | 12 Abr 2002 | 3 Feb 2004 | David Clark Company Incorporated | Headset ear seal | | US6856690 | 9 Ene 2002 | 15 Feb 2005 | Plantronis, Inc. | Comfortable earphone cushions | | US8213628 | 7 Jul 2006 | 3 Jul 2012 | Amplifon A.G. | Listening device for clear perception of sound signals in a noisy environment | | USD391575 | 21 Abr 1995 | 3 Mar 1998 | David Clark Company Inc. | Headset earcup | | USD398309 | 18 Abr 1996 | 15 Sep 1998 | David Clark Company Inc. | Headset |
|