JH

James D. Helm

📍 Yakima, WA: #65 of 266 inventorsTop 25%
🗺 Washington: #35,300 of 76,902 inventorsTop 50%
Overall (All Time): #2,300,660 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5196824 Float actuated liquid level monitoring apparatus — 1993-03-23
4300664 Locking device Walter G. Gellerson 1981-11-17