Hierarchy/Derived subclasses
| 29 / 81.01 | -> 81.13 | -> 81.14 |
| -> 81.15 | ||
| -> 81.16 |
uspto searches
Patent Apps in 29/81.13Granted Patents in 29/81.13
Use the links above or do an advanced search in ppubs for:
(29/81.13.ccls. or 29/81.14.ccls. or 29/81.15.ccls. or 29/81.16.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.