MH

Mitchel Helfeld

📍 Trumbull, CT: #237 of 533 inventorsTop 45%
🗺 Connecticut: #15,609 of 34,797 inventorsTop 45%
Overall (All Time): #2,293,589 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5302292 Method for treating ground water contamination Kenneth Soeder 1994-04-12
5034155 Cooling water treatment composition Kenneth Soeder 1991-07-23