DD

Dongxia Duan

📍 Qingdao, CN: #156 of 542 inventorsTop 30%
Overall (2023): #461,829 of 537,848Top 90%
1
Patents 2023

Issued Patents 2023

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
11839841 Online cleaning device and online cleaning method Guangzhou Liu 2023-12-12