USPC Class Details

Description: 303 fluid-pressure and analogous brake systems / 303 fluid-pressure and analogous brake systems/(121) speed-controlled (127) pneumatic (128) for a railway vehicle (e.g., train) (133) traction control

Hierarchy/Derived subclasses

303 / 121-> 127-> 128-> 133

uspto searches

Patent Apps in 303/133

Granted Patents in 303/133

Use the links above or do an advanced search in ppubs for:
(303/133.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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