| Class | Subclass | Patent |
| 530 | 232 | 07923531 |
| 327 | 07923532 | |
| 333 | 07923533 | |
| 350 | 07923534 | |
| 07923535 | ||
| 07923536 | ||
| 375 | 07923537 | |
| 387.3 | 07923538 | |
| 388.15 | 07923539 | |
| 534 | 575 | 07923540 |
| 536 | 18.1 | 07923541 |
| 23.1 | 07923542 | |
| 07923543 | ||
| 07923544 | ||
| 23.5 | 07923545 | |
| 24.1 | 07923546 | |
| 24.5 | 07923547 | |
| 07923548 | ||
| 07923549 | ||
| 25.3 | 07923550 | |
| 25.4 | 07923551 | |
| 124 | 07923552 |