USPC Class Details

Description: 398 optical communications / 398 optical communications/(118) optical communication over freee space (130) transmitter and receiver (131) including alignment

Hierarchy/Derived subclasses

398 / 118-> 130-> 131

uspto searches

Patent Apps in 398/131

Granted Patents in 398/131

Use the links above or do an advanced search in ppubs for:
(398/131.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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