Description: 118 / (20) Upstream Twister (22) Source Imparts Twist (23) Source Rotates about Two Axes

Hierarchy/Derived subclasses

118 / 20	-> 22	-> 23	-> 24	-> 25
			-> 26

CIPO searches

search just 118/23

- or -

search hierarchy!

The "search hierarchy!" link will execute this search:
((118/23 <IN> CPC) <OR> (118/24 <IN> CPC) <OR> (118/25 <IN> CPC) <OR> (118/26 <IN> CPC))

This will show what classes derive from the input. Ex: entering 78/35 shows the derived classes and the search that can be used to find patents in those subclasses.

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