| Number | Date | Country | Kind |
|---|---|---|---|
| 98-1346 | Jul 1998 | SEX |
| Number | Name | Date | Kind |
|---|---|---|---|
| D298670 | Palmaer | Nov 1988 | |
| D313092 | Nilsson | Dec 1990 | |
| D317767 | Banks | Jun 1991 | |
| D326654 | Brown | Jun 1992 | |
| D377174 | Runquist | Jan 1997 | |
| D411200 | Almqvist | Jun 1999 | |
| D413413 | Dillon et al. | Aug 1999 | |
| 4069512 | Palmaer | Jan 1978 | |
| 4802243 | Griffiths | Feb 1989 | |
| 5185807 | Bergin et al. | Feb 1993 | |
| 5384857 | Nordin et al. | Jan 1995 |
| Entry |
|---|
| Noise attenuating headsets #H3340 and #H3341 as shown in David Clark Company catalog, p. 7, Jul. 1988. |