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 (159.41) multifocal (159.48) multiple elements

Hierarchy/Derived subclasses

351 / 41-> 159.01-> 159.41-> 159.48

uspto searches

Patent Apps in 351/159.48

Granted Patents in 351/159.48

Use the links above or do an advanced search in ppubs for:
(351/159.48.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