Hierarchy/Derived subclasses
454 / 69 | -> 83 | -> 88 | -> 89 | |
-> 90 | -> 91 | |||
-> 92 |
uspto searches
Patent Apps in 454/88Granted Patents in 454/88
Use the links above or do an advanced search in ppubs for:
(454/88.ccls. or 454/89.ccls. or 454/90.ccls. or 454/91.ccls. or 454/92.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.