Inventor

GAO ZHONGXIAN

CN2 patents

Patents

2 patents

US11523467B2Dec 6, 2022

Group control device

CHINA UNIV OF PETROLEUM BLUE SKY QINGDAO PETROLEUM TECHNOLOGY CO LTD0 citations42

US11404994B2Aug 2, 2022

Frequency converter module

CHINA UNIV OF PETROLEUM BLUE SKY QINGDAO PETROLEUM TECHNOLOGY CO LTD0 citations40