USPC Class Details

Description: 370 multiplex communications / 370 multiplex communications/(259) special services (260) conferencing (261) technique for setting up a conference call

Hierarchy/Derived subclasses

370 / 259-> 260-> 261-> 262

uspto searches

Patent Apps in 370/261

Granted Patents in 370/261

Use the links above or do an advanced search in ppubs for:
(370/261.ccls. or 370/262.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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