QY

Qisen Yan

TU Tsinghua University: 1 patents #1,221 of 2,815Top 45%
Overall (All Time): #3,563,774 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6481234 Heat pump system for air conditioning adaptable to cold regions Guoyuan Ma, Yi Jiang 2002-11-19