DS

Der-Hsien Shen

Overall (All Time): #2,197,135 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6834554 Apparatus for direct shear stress testing of sample — 2004-12-28
6000876 Content and production method for semi-rigid asphalt concrete Cheng Lu 1999-12-14