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Ching-Shun Chang

UN Unknown: 2 patents #12,644 of 83,584Top 20%
Overall (All Time): #1,487,288 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
9545708 Pneumatic motor with built-in striker mechanism — 2017-01-17
8647084 Cylinder dividing mechanism of a pneumatic tool — 2014-02-11
8196675 Impact hammer with pre-pressing damping and buffering effect — 2012-06-12