Hierarchy/Derived subclasses
435 / 41 | -> 72 | -> 74 | -> 75 | -> 76 | ||
-> 77 | ||||||
-> 78 | ||||||
-> 79 | -> 80 | -> 81 | ||||
-> 82 | -> 83 |
uspto searches
Patent Apps in 435/74Granted Patents in 435/74
Use the links above or do an advanced search in ppubs for:
(435/74.ccls. or 435/75.ccls. or 435/76.ccls. or 435/77.ccls. or 435/78.ccls. or 435/79.ccls. or 435/80.ccls. or 435/81.ccls. or 435/82.ccls. or 435/83.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.