USPC Class Details

Description: 420 alloys or metallic compositions / 420 alloys or metallic compositions/(8) ferrous (i.e., iron base) (34) nine percent or more chromium containing (62) over 0.1 percent aluminum containing

Hierarchy/Derived subclasses

420 / 8-> 34-> 62-> 63

uspto searches

Patent Apps in 420/62

Granted Patents in 420/62

Use the links above or do an advanced search in ppubs for:
(420/62.ccls. or 420/63.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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