Hierarchy/Derived subclasses
194 / 247 | -> 260 | -> 261 | -> 278 | -> 280 | -> 281 |
uspto searches
Patent Apps in 194/281Granted Patents in 194/281
Use the links above or do an advanced search in ppubs for:
(194/281.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.