USPC Class Details

Description: 55 gas separation / 55 gas separation/(482) two or more separators (e.g., spaced filters in flow line or casing) (486) plies or layers of different characteristics or orientation (489) orientation of elements

Hierarchy/Derived subclasses

55 / 482-> 486-> 489

uspto searches

Patent Apps in 55/489

Granted Patents in 55/489

Use the links above or do an advanced search in ppubs for:
(55/489.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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