Hierarchy/Derived subclasses
| 70 / 431 | -> 432 | -> 433 | -> 434 |
| -> 435 | |||
| -> 436 | -> 437 | ||
| -> 438 | |||
| -> 439 | -> 440 | ||
| -> 441 |
uspto searches
Patent Apps in 70/432Granted Patents in 70/432
Use the links above or do an advanced search in ppubs for:
(70/432.ccls. or 70/433.ccls. or 70/434.ccls. or 70/435.ccls. or 70/436.ccls. or 70/437.ccls. or 70/438.ccls. or 70/439.ccls. or 70/440.ccls. or 70/441.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.