| Class | Subclass | Patent |
| PLT | 156 | PP021834 |
| 181 | PP021835 | |
| 190 | PP021836 | |
| 195 | PP021837 | |
| 224 | PP021838 | |
| 226 | PP021839 | |
| 251 | PP021840 | |
| 263.1 | PP021841 | |
| 272 | PP021842 | |
| 281 | PP021843 | |
| 285 | PP021844 | |
| 322 | PP021845 | |
| 332 | PP021846 | |
| PP021847 | ||
| PP021848 | ||
| PP021849 | ||
| PP021850 | ||
| 343 | PP021851 | |
| 347 | PP021852 | |
| 356 | PP021853 | |
| 373 | PP021854 | |
| 407 | PP021855 | |
| 440 | PP021856 | |
| PP021857 | ||
| PP021858 | ||
| PP021859 | ||
| PP021860 | ||
| PP021861 |