Hierarchy/Derived subclasses
| 322 / 44 | -> 89 | -> 90 | ||
| -> 91 | -> 92 | |||
| -> 93 | ||||
| -> 94 | ||||
| -> 95 | -> 96 | |||
| -> 97 | -> 98 |
uspto searches
Patent Apps in 322/89Granted Patents in 322/89
Use the links above or do an advanced search in ppubs for:
(322/89.ccls. or 322/90.ccls. or 322/91.ccls. or 322/92.ccls. or 322/93.ccls. or 322/94.ccls. or 322/95.ccls. or 322/96.ccls. or 322/97.ccls. or 322/98.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.