Tengfei Ma

City:

Qingfeng County

Country:

China

Published Applications:

Last publication date:

2021-12-16

Top Assignees for applications by Tengfei Ma

The entities that hold a legal rights for patent applications filed by inventor Ma Tengfei:

Tengfei Ma from Qingfeng County, CN has applied for patents for these inventions. The list has both pending applications and granted patents:

Method for quickly optimizing key mining parameters of outburst coal seam

InventorID:

5270957 ⎘