HC

Haiyan Cheng

Overall (All Time): #2,516,235 of 4,157,543Top 65%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
12044531 Level instrument and method for surveying mining subsidence zone in coal mining area Bo Xue, Shikai An, Yanfei Xu, Yanqing Li, Wei Miao +4 more 2024-07-23