SH

Shaoxia Han

📍 Panjin City, CN: #7 of 24 inventorsTop 30%
Overall (All Time): #3,661,417 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5957197 Downhole cut-off valve used for cementing Xianchang Xia, Fuyan Zhang, Xijun Tian, Hong Li 1999-09-28