USPC Class Details

Description: 128 surgery / 128 surgery/(200.24) respiratory method or device (201.22) including body or head supported means covering user's scalp (201.23) and nose and mouth also covered (201.28) having valve, or valve control, structure

Hierarchy/Derived subclasses

128 / 200.24

-> 201.22

-> 201.23

-> 201.28

uspto searches

Patent Apps in 128/201.28

Granted Patents in 128/201.28

Use the links above or do an advanced search in ppubs for:
(128/201.28.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