DV

Dennis B. Voorberg

UG United States Gypsum: 1 patents #247 of 432Top 60%
Overall (All Time): #2,249,135 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5901912 Efficient production of landplaster by collecting and classifying gypsum fines — 1999-05-11
5769332 Efficient production of landplaster by collecting and classsifying gypsum fines — 1998-06-23