USPC Class Details

Description: 252 compositions / 252 compositions/(2) fire-extinguishing (8.05) foam-stabilizant or colloid-stabilizant containing

Hierarchy/Derived subclasses

252 / 2-> 8.05

uspto searches

Patent Apps in 252/8.05

Granted Patents in 252/8.05

Use the links above or do an advanced search in ppubs for:
(252/8.05.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.
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