Hierarchy/Derived subclasses
55 / 490 | -> 495 | -> 497 | -> 499 |
uspto searches
Patent Apps in 55/499Granted Patents in 55/499
Use the links above or do an advanced search in ppubs for:
(55/499.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.