DH

David He

BH Beijing Huamei: 1 patents #46 of 71Top 65%
CU Cnpc Usa: 1 patents #61 of 99Top 65%
Overall (All Time): #2,506,451 of 4,157,543Top 65%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
12011773 Cutting elements with reduced variable back rake angle Jiaqing Yu, Chris Cheng, Ning Li, Kevin Waddell, Xu Wang +2 more 2024-06-18