DR

David J. Roth

📍 Redmond, WA: #54 of 183 inventorsTop 30%
🗺 Washington: #611 of 2,427 inventorsTop 30%
Overall (1997): #161,649 of 185,788Top 90%
1
Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5669957 Dross compression apparatus and method utilizing ribs on collector and head — 1997-09-23