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 (159.02) eye contact (159.05) multifocal (159.1) specific viewing zones (159.11) having diffractive portion

Hierarchy/Derived subclasses

351 / 41-> 159.01-> 159.02-> 159.05-> 159.1-> 159.11

uspto searches

Patent Apps in 351/159.11

Granted Patents in 351/159.11

Use the links above or do an advanced search in ppubs for:
(351/159.11.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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