Hierarchy/Derived subclasses
277 / 345 | -> 500 | -> 549 | -> 572 | -> 573 | -> 574 |
-> 575 | |||||
-> 576 | -> 577 |
uspto searches
Patent Apps in 277/572Granted Patents in 277/572
Use the links above or do an advanced search in ppubs for:
(277/572.ccls. or 277/573.ccls. or 277/574.ccls. or 277/575.ccls. or 277/576.ccls. or 277/577.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.