USPC Class Details

Description: 216 etching a substrate: processes / 216 etching a substrate: processes/(28) forming or treating an ornamented article (30) treating stone (e.g., marble, etc.)

Hierarchy/Derived subclasses

216 / 28

-> 30

uspto searches

Patent Apps in 216/30

Granted Patents in 216/30

Use the links above or do an advanced search in ppubs for:
(216/30.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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