Hierarchy/Derived subclasses
| 49 / 149 | -> 150 | -> 151 | ||
| -> 152 | -> 153 | -> 154 | ||
| -> 155 | ||||
| -> 156 | ||||
| -> 157 | ||||
| -> 158 | -> 159 | -> 160 | ||
| -> 161 | -> 162 | |||
| -> 163 | -> 164 | -> 165 | ||
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| -> 171 | ||||
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| -> 174 | -> 175 | |||
| -> 176 | -> 177 | -> 178 | ||
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| -> 181 | ||||
| -> 182 | ||||
| -> 183 | -> 184 | -> 185 | ||
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| -> 194 | -> 195 | -> 196 |
uspto searches
Patent Apps in 49/149Granted Patents in 49/149
Use the links above or do an advanced search in ppubs for:
(49/149.ccls. or 49/150.ccls. or 49/151.ccls. or 49/152.ccls. or 49/153.ccls. or 49/154.ccls. or 49/155.ccls. or 49/156.ccls. or 49/157.ccls. or 49/158.ccls. or 49/159.ccls. or 49/160.ccls. or 49/161.ccls. or 49/162.ccls. or 49/163.ccls. or 49/164.ccls. or 49/165.ccls. or 49/166.ccls. or 49/167.ccls. or 49/168.ccls. or 49/169.ccls. or 49/170.ccls. or 49/171.ccls. or 49/172.ccls. or 49/173.ccls. or 49/174.ccls. or 49/175.ccls. or 49/176.ccls. or 49/177.ccls. or 49/178.ccls. or 49/179.ccls. or 49/180.ccls. or 49/181.ccls. or 49/182.ccls. or 49/183.ccls. or 49/184.ccls. or 49/185.ccls. or 49/186.ccls. or 49/187.ccls. or 49/188.ccls. or 49/189.ccls. or 49/190.ccls. or 49/191.ccls. or 49/192.ccls. or 49/193.ccls. or 49/194.ccls. or 49/195.ccls. or 49/196.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.