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 (221) reusable hinged closure (223) reusable hinged closure provides an access opening which is coextensive with the entire top wall of the box (224) reusable hinged closure includes three depending flanges or tabs

Hierarchy/Derived subclasses

229 / 100	-> 200	-> 210	-> 221	-> 223	-> 224	-> 225	-> 226	-> 227
						-> 228

uspto searches

Patent Apps in 229/224

Granted Patents in 229/224

Use the links above or do an advanced search in ppubs for:
(229/224.ccls. or 229/225.ccls. or 229/226.ccls. or 229/227.ccls. or 229/228.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.