USPC Class Details – HistoricIP

Description: D14 recording, communication, or information retrieval equipment / d14 recording, communication, or information retrieval equipment/(300) computer, data processor equipment (301) mainframe, central data processing or server type (308) cabinet

Hierarchy/Derived subclasses

D14 / 300	-> 301	-> 308	-> 309
			-> 310
			-> 311
			-> 312

uspto searches

Patent Apps in D14/308

Granted Patents in D14/308

Use the links above or do an advanced search in ppubs for:
(D14/308.ccls. or D14/309.ccls. or D14/310.ccls. or D14/311.ccls. or D14/312.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.