ZS

Zhishen Su

Overall (2019): #60,289 of 560,194Top 15%
3
Patents 2019

Issued Patents 2019

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
10378531 Non-beam pumping unit driven by a motor reduction unit — 2019-08-13
10233985 Hand brake system used on pumping unit without walking beam — 2019-03-19
10184467 Non-beam pumping unit driven by a biaxial motor — 2019-01-22