USPC Class Details – HistoricIP

Description: D14 recording, communication, or information retrieval equipment / d14 recording, communication, or information retrieval equipment/(496) video or audio transmission, recording or playback equipment (217) element or attachment (11) (225) microphone

Hierarchy/Derived subclasses

D14 / 496	-> 217	-> 11	-> 225	-> 226
				-> 227
				-> 228
				-> 229

uspto searches

Patent Apps in D14/225

Granted Patents in D14/225

Use the links above or do an advanced search in ppubs for:
(D14/225.ccls. or D14/226.ccls. or D14/227.ccls. or D14/228.ccls. or D14/229.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.