| Number | Name | Date | Kind |
|---|---|---|---|
| 378907 | Stepp | Mar 1888 | |
| D. 428302 | Miller | Jul 2000 | |
| 1463145 | Koss | Jul 1923 | |
| 4182458 | Meckler | Jan 1980 | |
| 4731512 | Barriac | Mar 1988 | |
| 5040694 | Gambello | Aug 1991 | |
| 5429257 | Greenfield et al. | Jul 1995 | |
| 5704502 | Greenfield | Jan 1998 | |
| 5893480 | Dore et al. | Apr 1999 |
| Entry |
|---|
| U.S. patent application No. 29/120,521 filed Mar. 30, 2000. |
| U.S. patent application No. 09/338,819 filed Jun. 23, 1999. |
| Number | Date | Country | |
|---|---|---|---|
| 60/090479 | Jun 1998 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 09/338819 | Jun 1999 | US |
| Child | 29/120521 | US |