| Number | Name | Date | Kind |
|---|---|---|---|
| 219243 | Frankl | Sep 1879 | A |
| 2131248 | Astrove | Sep 1938 | A |
| 2241694 | Astrove | May 1941 | A |
| 2376284 | Sidelmann | May 1945 | A |
| 2839757 | Gianola | Jun 1958 | A |
| 4980928 | Ellis | Jan 1991 | A |
| 5101513 | Bowers | Apr 1992 | A |
| 6532596 | Fosmo | Mar 2003 | B1 |
| Number | Date | Country |
|---|---|---|
| WO 02094052 | Nov 2002 | WO |
| Entry |
|---|
| Derwent-Acc-No: 2003-227306.* |
| Derwent-Acc-No: 2003-019988. |