USPC Class Details – HistoricIP

Description: 229 envelopes, wrappers, and paperboard boxes / 229 envelopes, wrappers, and paperboard boxes/(100) paperboard box (120.02) compartmented (120.08) partition unitary (i.e., of one-piece construction) with and folded from a box wall (120.18) partition folded from a sidewall

Hierarchy/Derived subclasses

229 / 100	-> 120.02	-> 120.08	-> 120.18	-> 120.19
				-> 120.21

uspto searches

Patent Apps in 229/120.18

Granted Patents in 229/120.18

Use the links above or do an advanced search in ppubs for:
(229/120.18.ccls. or 229/120.19.ccls. or 229/120.21.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.