Chengdu
China
3
2023-12-28
The entities that hold a legal rights for patent applications filed by inventor DU Mingjun:
Mingjun DU from Chengdu, CN has applied for patents for these inventions. The list has both pending applications and granted patents:
Underbalanced drilling vibrating screen integrated with automatic drainage and vacuum chucks
#2 | 2023-04-27INDEPENDENT DOUBLE-NEGATIVE-PRESSURE SHALE SHAKER
#3 | 2022-09-29Negative pressure shale shaker integrated with negative pressure generation and gas-liquid separation
5531512 ⎘