| Class | Subclass | Patent |
| PLT | 130 | PP021816 |
| 180 | PP021817 | |
| 211 | PP021818 | |
| 226 | PP021819 | |
| PP021820 | ||
| 232 | PP021821 | |
| 234 | PP021822 | |
| 246 | PP021823 | |
| 283 | PP021824 | |
| 288 | PP021825 | |
| PP021826 | ||
| 294 | PP021827 | |
| 356 | PP021828 | |
| 370 | PP021829 | |
| 383 | PP021830 | |
| 384 | PP021831 | |
| 439 | PP021832 | |
| 479 | PP021833 |