USPC Class Details

Description: 368 horology: time measuring systems or devices / 368 horology: time measuring systems or devices/(243) signalling means (244) time condition responsive (i.e., alarm) (250) electrical (257) with mechanical let-off

Hierarchy/Derived subclasses

368 / 243-> 244-> 250-> 257-> 258

uspto searches

Patent Apps in 368/257

Granted Patents in 368/257

Use the links above or do an advanced search in ppubs for:
(368/257.ccls. or 368/258.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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