Hierarchy/Derived subclasses
249 / 117 | -> 160 | -> 170 | -> 171 | -> 172 |
uspto searches
Patent Apps in 249/172Granted Patents in 249/172
Use the links above or do an advanced search in ppubs for:
(249/172.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.