Hierarchy/Derived subclasses
| 66 / 169r | -> 170 | -> 171 | -> 172r | -> 173 | |||
| -> 172e | |||||||
| -> 174 | |||||||
| -> 175 | |||||||
| -> 176 | |||||||
| -> 177 | -> 178r | -> 179 | |||||
| -> 180 | -> 181 | ||||||
| -> 182 | |||||||
| -> 183 | -> 184 | ||||||
| -> 185 | -> 186 | -> 187 | |||||
| -> 188 | |||||||
| -> 178a | |||||||
| -> 189 | |||||||
| -> 190 | -> 191 | ||||||
| -> 192 | -> 193 | ||||||
| -> 194 | |||||||
| -> 195 | |||||||
| -> 196 | -> 197 | ||||||
| -> 198 | -> 199 | ||||||
| -> 200 | |||||||
| -> 201 | |||||||
| -> 202 | |||||||
| -> 169a |
uspto searches
Patent Apps in 66/169rGranted Patents in 66/169r
Use the links above or do an advanced search in ppubs for:
(66/169r.ccls. or 66/170.ccls. or 66/171.ccls. or 66/172r.ccls. or 66/173.ccls. or 66/172e.ccls. or 66/174.ccls. or 66/175.ccls. or 66/176.ccls. or 66/177.ccls. or 66/178r.ccls. or 66/179.ccls. or 66/180.ccls. or 66/181.ccls. or 66/182.ccls. or 66/183.ccls. or 66/184.ccls. or 66/185.ccls. or 66/186.ccls. or 66/187.ccls. or 66/188.ccls. or 66/178a.ccls. or 66/189.ccls. or 66/190.ccls. or 66/191.ccls. or 66/192.ccls. or 66/193.ccls. or 66/194.ccls. or 66/195.ccls. or 66/196.ccls. or 66/197.ccls. or 66/198.ccls. or 66/199.ccls. or 66/200.ccls. or 66/201.ccls. or 66/202.ccls. or 66/169a.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.