Zeming Qin

City:

Guangdong

Country:

China

Published Applications:

Last publication date:

2024-04-18

Top Assignees for applications by Zeming Qin

The entities that hold a legal rights for patent applications filed by inventor Qin Zeming:

Zeming Qin from Guangdong, CN has applied for patents for these inventions. The list has both pending applications and granted patents:

Seal for repeatedly switchable stepless fracturing sliding sleeve

Slip sealing structure

InventorID:

6550004 ⎘