USPC Class Details – HistoricIP

Description: 347 incremental printing of symbolic information / 347 incremental printing of symbolic information/(224) light or beam marking apparatus or processes (225) scan of light (251) tone marking

Hierarchy/Derived subclasses

347 / 224	-> 225	-> 251	-> 252
			-> 253
			-> 254

uspto searches

Patent Apps in 347/251

Granted Patents in 347/251

Use the links above or do an advanced search in ppubs for:
(347/251.ccls. or 347/252.ccls. or 347/253.ccls. or 347/254.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.