| Subclass | Subgroup | Patent |
| B66B | 1/28 | 12391515 |
| 1/302 | 12391516 | |
| 3/002 | 12391517 | |
| 12391518 | ||
| 5/0087 | 12391519 | |
| 12391520 | ||
| 5/16 | 12391521 | |
| B66C | 13/46 | 12391522 |
| 13/48 | 12391523 | |
| B66D | 3/26 | 12391524 |
| B66F | 3/44 | 12391525 |
| 5/00 | 12391526 | |
| 9/0755 | 12391527 | |
| 15/00 | 12391528 | |
| 17/006 | 12391529 | |
| 12391530 |