USPC Class Details

Description: D19 office supplies; artists and teachers materials / d19 office supplies; artists and teachers materials/(20) calendar or calendar holder (21) combined (23) with pen or pencil holder (4)

Hierarchy/Derived subclasses

D19 / 20

-> 21

-> 23

-> 4

uspto searches

Patent Apps in D19/23

Granted Patents in D19/23

Use the links above or do an advanced search in ppubs for:
(D19/23.ccls. or D19/4.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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