USPC Class Details

Description: 351 optics: eye examining, vision testing and correcting / 351 optics: eye examining, vision testing and correcting/(200) eye examining or testing instrument (222) subjective type (239) including test chart or target (243) illuminated

Hierarchy/Derived subclasses

351 / 200

-> 222

-> 239

-> 243

uspto searches

Patent Apps in 351/243

Granted Patents in 351/243

Use the links above or do an advanced search in ppubs for:
(351/243.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.

Display:

Back