USPC Class Details

Description: 138 pipes and tubular conduits / 138 pipes and tubular conduits/(97) repairing

Hierarchy/Derived subclasses

138 / 97-> 98-> 99

uspto searches

Patent Apps in 138/97

Granted Patents in 138/97

Use the links above or do an advanced search in ppubs for:
(138/97.ccls. or 138/98.ccls. or 138/99.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