| Class | Subclass | Patent |
| 180 | 9.21 | 07921942 |
| 65.21 | 07921943 | |
| 65.265 | 07921944 | |
| 65.285 | 07921945 | |
| 65.29 | 07921946 | |
| 65.31 | 07921947 | |
| 07921948 | ||
| 65.6 | 07921949 | |
| 07921950 | ||
| 68.5 | 07921951 | |
| 199 | 07921952 | |
| 208 | 07921953 | |
| 209 | 07921954 | |
| 210 | 07921955 | |
| 242 | 07921956 | |
| 274 | 07921957 | |
| 444 | 07921958 | |
| 181 | 131 | 07921959 |
| 198 | 07921960 | |
| 207 | 07921961 | |
| 225 | 07921962 | |
| 229 | 07921963 | |
| 235 | 07921964 | |
| 290 | 07921965 | |
| 292 | 07921966 | |
| 182 | 3 | 07921967 |
| 187 | 388 | 07921968 |
| 391 | 07921969 | |
| 400 | 07921970 | |
| 188 | 72.7 | 07921971 |
| 218XL | 07921972 | |
| 266 | 07921973 | |
| 322.19 | 07921974 |