Hierarchy/Derived subclasses
| 52 / 169.1 | -> 169.2 | -> 169.3 |
| -> 169.4 | ||
| -> 169.5 | ||
| -> 169.6 | ||
| -> 169.7 | -> 169.8 | |
| -> 169.9 | ||
| -> 169.11 | ||
| -> 169.12 | ||
| -> 169.13 | ||
| -> 169.14 | ||
| -> 170 |
uspto searches
Patent Apps in 52/169.1Granted Patents in 52/169.1
Use the links above or do an advanced search in ppubs for:
(52/169.1.ccls. or 52/169.2.ccls. or 52/169.3.ccls. or 52/169.4.ccls. or 52/169.5.ccls. or 52/169.6.ccls. or 52/169.7.ccls. or 52/169.8.ccls. or 52/169.9.ccls. or 52/169.11.ccls. or 52/169.12.ccls. or 52/169.13.ccls. or 52/169.14.ccls. or 52/170.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.