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 (302) freestanding console

Hierarchy/Derived subclasses

D14 / 300	-> 301	-> 302	-> 303
			-> 304	-> 305	-> 306
			-> 307

uspto searches

Patent Apps in D14/302

Granted Patents in D14/302

Use the links above or do an advanced search in ppubs for:
(D14/302.ccls. or D14/303.ccls. or D14/304.ccls. or D14/305.ccls. or D14/306.ccls. or D14/307.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.