Hierarchy/Derived subclasses
| 70 / 266 | -> 275 | -> 277 | -> 278.1 | -> s | -> 278.2 | -> 278.3 |
| -> 278.4 | -> 278.5 | |||||
| -> 278.6 | ||||||
| -> 278.7 | ||||||
| -> 279.1 | ||||||
| -> 280 | ||||||
| -> 281 | ||||||
| -> 282 | ||||||
| -> 283 | ||||||
| -> 283.1 |
uspto searches
Patent Apps in 70/277Granted Patents in 70/277
Use the links above or do an advanced search in ppubs for:
(70/277.ccls. or 70/278.1.ccls. or 70/s.ccls. or 70/278.2.ccls. or 70/278.3.ccls. or 70/278.4.ccls. or 70/278.5.ccls. or 70/278.6.ccls. or 70/278.7.ccls. or 70/279.1.ccls. or 70/280.ccls. or 70/281.ccls. or 70/282.ccls. or 70/283.ccls. or 70/283.1.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.