| Class | Subclass | Patent |
| 51 | 308 | 07942945 |
| 52 | 2.11 | 07941974 |
| 79.12 | 07941975 | |
| 79.5 | 07941976 | |
| 101 | 07941977 | |
| 108 | 07941978 | |
| 177 | 07941979 | |
| 209 | 07941980 | |
| 232 | 07941981 | |
| 235 | 07941982 | |
| 241 | 07941983 | |
| 636 | 07941984 | |
| 655.1 | 07941985 | |
| 745.2 | 07941986 | |
| 747.11 | 07941987 | |
| 07941988 | ||
| 800.12 | 07941989 | |
| 53 | 48.1 | 07941990 |
| 374.2 | 07941991 | |
| 446 | 07941992 | |
| 55 | 320 | 07942946 |
| 385.3 | 07942947 | |
| 486 | 07942948 |