Hierarchy/Derived subclasses
| 24 / 16r | -> 17r | -> 18 | |||
| -> 17a | |||||
| -> 17b | |||||
| -> 17ap | |||||
| -> 19 | -> 268 | ||||
| -> 269 | |||||
| -> 270 | -> 271 | -> 272 | |||
| -> 273 | |||||
| -> 274r | -> 274p | ||||
| -> 274wb | |||||
| -> 275 | -> 276 | -> 277 | |||
| -> 278 | |||||
| -> 279 | -> 280 | -> 281 | -> 282 | ||
| -> 283 | |||||
| -> 284 | |||||
| -> 285 | |||||
| -> 286 | |||||
| -> 20r | -> 21 | -> 22 | -> 23r | -> 23b | |
| -> 23w | |||||
| -> 23ee | |||||
| -> 24 | |||||
| -> 25 | |||||
| -> 26 | |||||
| -> 20cw | |||||
| -> 20ee | |||||
| -> 20tt | |||||
| -> 20s | |||||
| -> 20ls | |||||
| -> 20w | |||||
| -> 27 | -> 28 | -> 29 | |||
| -> 30 | |||||
| -> 16pb |
uspto searches
Patent Apps in 24/16rGranted Patents in 24/16r
Use the links above or do an advanced search in ppubs for:
(24/16r.ccls. or 24/17r.ccls. or 24/18.ccls. or 24/17a.ccls. or 24/17b.ccls. or 24/17ap.ccls. or 24/19.ccls. or 24/268.ccls. or 24/269.ccls. or 24/270.ccls. or 24/271.ccls. or 24/272.ccls. or 24/273.ccls. or 24/274r.ccls. or 24/274p.ccls. or 24/274wb.ccls. or 24/275.ccls. or 24/276.ccls. or 24/277.ccls. or 24/278.ccls. or 24/279.ccls. or 24/280.ccls. or 24/281.ccls. or 24/282.ccls. or 24/283.ccls. or 24/284.ccls. or 24/285.ccls. or 24/286.ccls. or 24/20r.ccls. or 24/21.ccls. or 24/22.ccls. or 24/23r.ccls. or 24/23b.ccls. or 24/23w.ccls. or 24/23ee.ccls. or 24/24.ccls. or 24/25.ccls. or 24/26.ccls. or 24/20cw.ccls. or 24/20ee.ccls. or 24/20tt.ccls. or 24/20s.ccls. or 24/20ls.ccls. or 24/20w.ccls. or 24/27.ccls. or 24/28.ccls. or 24/29.ccls. or 24/30.ccls. or 24/16pb.ccls.)
At about 35 search terms the uspto will give you this error "Too many search terms" The 35th term is bold.
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.