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 (140) telephone equipment (142) telephone or base therefor

Hierarchy/Derived subclasses

D14 / 496	-> 140	-> 142	-> 143
			-> 144	-> 4
			-> 145
			-> 146
			-> 147
			-> 148
			-> 149	-> 5	-> 150	-> 151	-> 152
						-> 153

uspto searches

Patent Apps in D14/142

Granted Patents in D14/142

Use the links above or do an advanced search in ppubs for:
(D14/142.ccls. or D14/143.ccls. or D14/144.ccls. or D14/4.ccls. or D14/145.ccls. or D14/146.ccls. or D14/147.ccls. or D14/148.ccls. or D14/149.ccls. or D14/5.ccls. or D14/150.ccls. or D14/151.ccls. or D14/152.ccls. or D14/153.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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