USPC Class Details – HistoricIP

Description: 277 seal for a joint or juncture / 277 seal for a joint or juncture/(345) seal between relatively movable parts (i.e., dynamic seal) (500) circumferential contact seal for other than piston (579) having floating ring or bushing (i.e., circumferentially contacting)

Hierarchy/Derived subclasses

277 / 345	-> 500	-> 579	-> 580	-> 581
			-> 582
			-> 583

uspto searches

Patent Apps in 277/579

Granted Patents in 277/579

Use the links above or do an advanced search in ppubs for:
(277/579.ccls. or 277/580.ccls. or 277/581.ccls. or 277/582.ccls. or 277/583.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.