KF

Keya Feng

Overall (All Time): #835,127 of 4,157,543Top 25%
6
Patents All Time

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
10260387 Engine oil supply system Zhao Kong, Ning Guo, Gan Chen 2019-04-16
9850851 Carburetor base of engine Zhao Kong, Ning Guo 2017-12-26
9797281 Four-stroke engine Zhao Kong, Ning Guo 2017-10-24
9797338 Engine with rocker chamber Zhao Kong, Ning Guo, Gan Chen 2017-10-24
9719460 Engine oil pan Zhao Kong, Ning Guo, Gan Chen 2017-08-01
9598988 Lubrication system for four-stroke engine Zhao Kong, Ning Guo, Gan Chen 2017-03-21