Hierarchy/Derived subclasses
415 / 52.1 | -> 55.1 | -> 55.2 | -> 55.4 |
uspto searches
Patent Apps in 415/55.4Granted Patents in 415/55.4
Use the links above or do an advanced search in ppubs for:
(415/55.4.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.