USPC Class Details – HistoricIP

Description: D14 recording, communication, or information retrieval equipment / d14 recording, communication, or information retrieval equipment/(300) computer, data processor equipment (356) peripheral equipment (388) operator interface or control (392) keyboard with conventional key arrangement (396) plural key array

Hierarchy/Derived subclasses

D14 / 300	-> 356	-> 388	-> 392	-> 396	-> 397
					-> 398

uspto searches

Patent Apps in D14/396

Granted Patents in D14/396

Use the links above or do an advanced search in ppubs for:
(D14/396.ccls. or D14/397.ccls. or D14/398.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.