| Number | Date | Country | Kind |
|---|---|---|---|
| 00228463 | Jun 2000 | CN | |
| 00240170 | Nov 2000 | CN |
| Number | Name | Date | Kind |
|---|---|---|---|
| 5048402 | Letournel et al. | Sep 1991 | A |
| Number | Date | Country |
|---|---|---|
| 0 328 432 | Aug 1989 | EP |
| 0 705 554 | Apr 1996 | EP |
| Entry |
|---|
| Search Report as performed on Dec. 11, 2001, by UK Patent Office Examiner E. Tonner as pertaining to GB 0113820.5. |