| Class | Subclass | Patent |
| 100 | 110 | 07921770 |
| 101 | 178 | 07921771 |
| 334 | 07921772 | |
| 350.6 | 07921773 | |
| 102 | 202.14 | 07921774 |
| 204 | 07921775 | |
| 275.8 | 07921776 | |
| 283 | 07921777 | |
| 306 | 07921778 | |
| 439 | 07921779 | |
| 07921780 | ||
| 104 | 75 | 07921781 |
| 89 | 07921782 | |
| 105 | 247 | 07921783 |
| 106 | 31.47 | 07922799 |
| 31.6 | 07922800 | |
| 31.9 | 07922801 | |
| 277 | 07922802 | |
| 287.16 | 07922803 | |
| 287.18 | 07922804 | |
| 478 | 07922805 | |
| 484 | 07922806 | |
| 493 | 07922807 | |
| 713 | 07922808 | |
| 07922809 | ||
| 718 | 07922810 | |
| 823 | 07922811 | |
| 108 | 57.25 | 07921784 |
| 132 | 07921785 |