DH

Douglas O. Hamilton

HA Hancor: 2 patents #14 of 26Top 55%
📍 Findlay, OH: #118 of 333 inventorsTop 40%
🗺 Ohio: #30,338 of 73,341 inventorsTop 45%
Overall (All Time): #2,273,299 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5669733 Angled adapter for a leaching chamber system Frank Daly, H. John Sidaway 1997-09-23
5556231 Severable leaching chamber with end cap H. John Sidaway 1996-09-17