LD

Leonard A. Duval

📍 Aurora, OH: #116 of 285 inventorsTop 45%
🗺 Ohio: #23,384 of 73,341 inventorsTop 35%
Overall (All Time): #1,676,581 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4696114 Method and apparatus for the drying of solid materials by displacement 1987-09-29
4406796 Method and apparatus for cleaning fine waste material mixed with oil and water 1983-09-27
4288329 Method and apparatus for cleaning fine waste material mixed with oil and water 1981-09-08