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HC Hangzhou Xzb Tech Co.: 3 patents #2 of 3Top 70%
Overall (All Time): #1,467,619 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
10408093 Welded high-pressure fuel pump roller tappet Na Xu, Hua Dong 2019-09-10
10287930 Lightweight rocker arm frame and curved crown part forming process thereof Na Xu 2019-05-14
9863382 High pressure oil pump roller tappet Na Xu 2018-01-09