USPC Class Details – HistoricIP

Description: 229 envelopes, wrappers, and paperboard boxes / 229 envelopes, wrappers, and paperboard boxes/(100) paperboard box (200) having means to facilitate opening the box by severing (e.g., tearing, cutting, piercing, etc.) box material or outer wrapper (210) tearing provides reusable closure (215) pour spout (217) pour spout includes at least part of the top wall

Hierarchy/Derived subclasses

229 / 100	-> 200	-> 210	-> 215	-> 217	-> 218
					-> 219

uspto searches

Patent Apps in 229/217

Granted Patents in 229/217

Use the links above or do an advanced search in ppubs for:
(229/217.ccls. or 229/218.ccls. or 229/219.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.