WK

Welchang Ke

Overall (All Time): #2,515,449 of 4,157,543Top 65%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
12041967 Electric heating device for preventing contact wearing out and tobacco falling out Huachen Liu, Yikun Chen, Long Huang, Chenghao Luo 2024-07-23