USPC Class Details

Description: D27 tobacco and smokers' supplies / d27 tobacco and smokers' supplies/(163) pipe (164) with heat exchange feature (e.g., repeating ribs or grooves, etc.)

Hierarchy/Derived subclasses

D27 / 163

-> 164

uspto searches

Patent Apps in D27/164

Granted Patents in D27/164

Use the links above or do an advanced search in ppubs for:
(D27/164.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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