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)

Hierarchy/Derived subclasses

D14 / 496	-> 217	-> 11	-> 218
			-> 219	-> 220
			-> 221	-> 12	-> 222
					-> 223
					-> 224	-> 224.1
			-> 225	-> 226
				-> 227
				-> 228
				-> 229
			-> 230	-> 27	-> 231
					-> 232
					-> 233
					-> 234	-> 235
						-> 236
					-> 237
					-> 238
			-> 238.1
			-> 239	-> 13
			-> 240	-> 242	-> 22
				-> 243
				-> 244	-> 245
					-> 246	-> 247
				-> 248	-> 23	-> 249	-> 24
				-> 250
				-> 251	-> 252
					-> 253
					-> 254
				-> 255
				-> 256
			-> 257	-> 258
			-> 259
			-> 260
			-> 260.1
			-> 261	-> 262
				-> 263
				-> 264
			-> 265

uspto searches

Patent Apps in D14/217

Granted Patents in D14/217

Use the links above or do an advanced search in ppubs for:
(D14/217.ccls. or D14/11.ccls. or D14/218.ccls. or D14/219.ccls. or D14/220.ccls. or D14/221.ccls. or D14/12.ccls. or D14/222.ccls. or D14/223.ccls. or D14/224.ccls. or D14/224.1.ccls. or D14/225.ccls. or D14/226.ccls. or D14/227.ccls. or D14/228.ccls. or D14/229.ccls. or D14/230.ccls. or D14/27.ccls. or D14/231.ccls. or D14/232.ccls. or D14/233.ccls. or D14/234.ccls. or D14/235.ccls. or D14/236.ccls. or D14/237.ccls. or D14/238.ccls. or D14/238.1.ccls. or D14/239.ccls. or D14/13.ccls. or 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. or D14/257.ccls. or D14/258.ccls. or D14/259.ccls. or D14/260.ccls. or D14/260.1.ccls. or D14/261.ccls. or D14/262.ccls. or D14/263.ccls. or D14/264.ccls. or D14/265.ccls.)

At about 35 search terms the uspto will give you this error "Too many search terms" The 35th term is bold.

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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