Hierarchy/Derived subclasses
| 84 / 1 | -> 600 | -> 671 | -> 678 | -> 679 | |
| -> 680 | |||||
| -> 681 | |||||
| -> 682 | |||||
| -> 683 | |||||
| -> 684 | |||||
| -> 685 | |||||
| -> 686 | |||||
| -> 687 | -> 688 | ||||
| -> 689 | |||||
| -> 690 |
uspto searches
Patent Apps in 84/678Granted Patents in 84/678
Use the links above or do an advanced search in ppubs for:
(84/678.ccls. or 84/679.ccls. or 84/680.ccls. or 84/681.ccls. or 84/682.ccls. or 84/683.ccls. or 84/684.ccls. or 84/685.ccls. or 84/686.ccls. or 84/687.ccls. or 84/688.ccls. or 84/689.ccls. or 84/690.ccls.)
This will show what classes derive from the input. Ex: entering 43/42.24 shows the derived classes and the search that can be used to find patents or patent applications in those subclasses.