Hierarchy/Derived subclasses
| 200 / 33r | -> 35r | -> 38r | -> 38a | |
| -> 38f | -> 38fa | |||
| -> 38fb | ||||
| -> 38b | -> 38ba | |||
| -> 38c | -> 38ca | |||
| -> 38d | -> 38da | |||
| -> 38db | ||||
| -> 38dc | ||||
| -> 38e |
uspto searches
Patent Apps in 200/38rGranted Patents in 200/38r
Use the links above or do an advanced search in ppubs for:
(200/38r.ccls. or 200/38a.ccls. or 200/38f.ccls. or 200/38fa.ccls. or 200/38fb.ccls. or 200/38b.ccls. or 200/38ba.ccls. or 200/38c.ccls. or 200/38ca.ccls. or 200/38d.ccls. or 200/38da.ccls. or 200/38db.ccls. or 200/38dc.ccls. or 200/38e.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.