USPC Class Details

Description: 351 optics: eye examining, vision testing and correcting / 351 optics: eye examining, vision testing and correcting/(41) spectacles and eyeglasses (159.01) ophthalmic lenses (159.69) with indicia or marking

Hierarchy/Derived subclasses

351 / 41

-> 159.01

-> 159.69

uspto searches

Patent Apps in 351/159.69

Granted Patents in 351/159.69

Use the links above or do an advanced search in ppubs for:
(351/159.69.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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