USPC Class Details

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) (434) piston ring or piston ring expander or seat therefor (493) segmented piston ring

Hierarchy/Derived subclasses

277 / 345

-> 434

-> 493

uspto searches

Patent Apps in 277/493

Granted Patents in 277/493

Use the links above or do an advanced search in ppubs for:
(277/493.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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