USPC Class Details

Description: 420 alloys or metallic compositions / 420 alloys or metallic compositions/(425) niobium base

Hierarchy/Derived subclasses

420 / 425-> 426

uspto searches

Patent Apps in 420/425

Granted Patents in 420/425

Use the links above or do an advanced search in ppubs for:
(420/425.ccls. or 420/426.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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