USPC Class Details – HistoricIP

Description: 273 amusement devices: games / 273 amusement devices: games/(236) board games, pieces, or boards therefor (242) piece moves over board having pattern (243) chance device controls amount or direction of movement of piece (244) sports or outdoor recreational activities

Hierarchy/Derived subclasses

273 / 236	-> 242	-> 243	-> 244	-> 244.1	-> 244.2
				-> 245
				-> 246
				-> 247

uspto searches

Patent Apps in 273/244

Granted Patents in 273/244

Use the links above or do an advanced search in ppubs for:
(273/244.ccls. or 273/244.1.ccls. or 273/244.2.ccls. or 273/245.ccls. or 273/246.ccls. or 273/247.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.