USPC Class Details

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) (240) telephone equipment

Hierarchy/Derived subclasses

D14 / 496	-> 217	-> 11	-> 240	-> 242	-> 22
				-> 243
				-> 244	-> 245
					-> 246	-> 247
				-> 248	-> 23	-> 249	-> 24
				-> 250
				-> 251	-> 252
					-> 253
					-> 254
				-> 255
				-> 256

uspto searches

Patent Apps in D14/240

Granted Patents in D14/240

Use the links above or do an advanced search in ppubs for:
(D14/240.ccls. or D14/242.ccls. or D14/22.ccls. or D14/243.ccls. or D14/244.ccls. or D14/245.ccls. or D14/246.ccls. or D14/247.ccls. or D14/248.ccls. or D14/23.ccls. or D14/249.ccls. or D14/24.ccls. or D14/250.ccls. or D14/251.ccls. or D14/252.ccls. or D14/253.ccls. or D14/254.ccls. or D14/255.ccls. or D14/256.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.

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