Hierarchy/Derived subclasses
| D3 / 201 | -> 207 | -> 208 | -> 209 |
| -> 210 | |||
| -> 211 | |||
| -> 212 |
uspto searches
Patent Apps in D3/207Granted Patents in D3/207
Use the links above or do an advanced search in ppubs for:
(D3/207.ccls. or D3/208.ccls. or D3/209.ccls. or D3/210.ccls. or D3/211.ccls. or D3/212.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.