USPC Class Details

Description: 216 etching a substrate: processes / 216 etching a substrate: processes/(33) adhesive or autogenous bonding of two or more self-sustaining preforms wherein at least two of the preforms are not intended to be removed (e.g., prefabricated base, etc.)

Hierarchy/Derived subclasses

216 / 33	-> 34	-> 35
	-> 36

uspto searches

Patent Apps in 216/33

Granted Patents in 216/33

Use the links above or do an advanced search in ppubs for:
(216/33.ccls. or 216/34.ccls. or 216/35.ccls. or 216/36.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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