USPC Class Details

Description: 351 optics: eye examining, vision testing and correcting / 351 optics: eye examining, vision testing and correcting/(41) spectacles and eyeglasses (65) pince-nez type (including pince-nez bridges, nose grips and nose pads therefor) (71) with spring biased nose grips (72) with pivoting levers (75) with springs encased

Hierarchy/Derived subclasses

351 / 41

-> 65

-> 71

-> 72

-> 75

uspto searches

Patent Apps in 351/75

Granted Patents in 351/75

Use the links above or do an advanced search in ppubs for:
(351/75.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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