QH

Qifa He

Overall (All Time): #1,752,395 of 4,157,543Top 45%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
11927572 Water removal method for gas concentration sampling, sampling method and device therefor — 2024-03-12
10281372 Multi-channel headspace extraction needle — 2019-05-07