Hierarchy/Derived subclasses
| 194 / 302 | -> 334 | -> 335 |
| -> 336 | ||
| -> 337 | ||
| -> 338 |
uspto searches
Patent Apps in 194/334Granted Patents in 194/334
Use the links above or do an advanced search in ppubs for:
(194/334.ccls. or 194/335.ccls. or 194/336.ccls. or 194/337.ccls. or 194/338.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.