Qingfeng Yu

City:

Shandong

Country:

China

Published Applications:

Last publication date:

2014-01-02

Top Assignees for applications by Qingfeng Yu

The entities that hold a legal rights for patent applications filed by inventor Yu Qingfeng:

Qingfeng Yu from Shandong, CN has applied for patents for these inventions. The list has both pending applications and granted patents:

Floating clamping device for injection head of continuous oil pipe

InventorID:

6410758 ⎘