Hierarchy/Derived subclasses
| 253 / 1 | -> 28 | -> 65 | -> 70 | -> 71 | -> 74 | -> 75 | |
| -> 7.4 | |||||||
| -> 7.5 | |||||||
| -> 7.6 | |||||||
| -> 7.7 | |||||||
| -> 7.8 |
CIPO searches
search just 253/75- or -
search hierarchy!
The "search hierarchy!" link will execute this search:
((253/75 <IN> CPC) <OR> (253/7.4 <IN> CPC) <OR> (253/7.5 <IN> CPC) <OR> (253/7.6 <IN> CPC) <OR> (253/7.7 <IN> CPC) <OR> (253/7.8 <IN> CPC))
This will show what classes derive from the input. Ex: entering 78/35 shows the derived classes and the search that can be used to find patents in those subclasses.