USPC Class Details – HistoricIP

Description: 134 cleaning and liquid contact with solids / 134 cleaning and liquid contact with solids/() processes (2) for metallic, siliceous, or calcareous basework, including chemical bleaching, oxidation or reduction (3) including acidic agent

Hierarchy/Derived subclasses

134 / 2

-> 3

uspto searches

Patent Apps in 134/3

Granted Patents in 134/3

Use the links above or do an advanced search in ppubs for:
(134/3.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.