| Number | Date | Country | Kind |
|---|---|---|---|
| 0011148 | May 2000 | GB |
| Number | Name | Date | Kind |
|---|---|---|---|
| 3699311 | Dunbar | Oct 1972 | A |
| 5523618 | Berney | Jun 1996 | A |
| 5714234 | Robertson | Feb 1998 | A |
| 5764138 | Lowe | Jun 1998 | A |
| 6107913 | Gatto et al. | Aug 2000 | A |
| 6144301 | Frieden | Nov 2000 | A |
| 6285285 | Mongrenier | Sep 2001 | B1 |
| Number | Date | Country |
|---|---|---|
| 297 06 922 | Jul 1997 | DE |
| 0 248 928 | Dec 1987 | EP |
| 2 717 593 | Sep 1995 | FR |
| 2 764 977 | Dec 1998 | FR |
| 2 777 378 | Oct 1999 | FR |
| Entry |
|---|
| European Search Report dated May 3, 2002 for corresponding European application No. 01304150.4. |