Hierarchy/Derived subclasses
977 / 840 | -> 882 | -> 883 | |
-> 884 | -> 885 | ||
-> 886 |
uspto searches
Patent Apps in 977/882Granted Patents in 977/882
Use the links above or do an advanced search in ppubs for:
(977/882.ccls. or 977/883.ccls. or 977/884.ccls. or 977/885.ccls. or 977/886.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.