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) (346) diverse and distinct dynamic seals (347) close proximity seal (e.g., contactless, fluent, etc.)

Hierarchy/Derived subclasses

277 / 345	-> 346	-> 347	-> 348	-> 349
			-> 350	-> 351

uspto searches

Patent Apps in 277/347

Granted Patents in 277/347

Use the links above or do an advanced search in ppubs for:
(277/347.ccls. or 277/348.ccls. or 277/349.ccls. or 277/350.ccls. or 277/351.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.