| Class | Subclass | Patent |
| 330 | 9 | 07920022 |
| 10 | 07920023 | |
| 253 | 07920024 | |
| 255 | 07920025 | |
| 07920026 | ||
| 264 | 07920027 | |
| 296 | 07920028 | |
| 310 | 07920029 | |
| 331 | 45 | 07920030 |
| 68 | 07920031 | |
| 176 | 07920032 | |
| 332 | 128 | 07920033 |
| 333 | 22R | 07920034 |
| 128 | 07920035 | |
| 188 | 07920036 | |
| 335 | 6 | 07920037 |
| 151 | 07920038 | |
| 336 | 61 | 07920039 |
| 185 | 07920040 | |
| 192 | 07920041 | |
| 200 | 07920042 | |
| 232 | 07920043 | |
| 337 | 186 | 07920044 |
| 338 | 22R | 07920045 |