DN

Darrell V. Nieschwitz

HP H-P Products: 2 patents #1 of 3Top 35%
📍 Louisville, OH: #1 of 12 inventorsTop 9%
🗺 Ohio: #1,342 of 7,937 inventorsTop 20%
Overall (2020): #180,745 of 565,922Top 35%
2
Patents 2020

Issued Patents 2020

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
10820763 Central vacuum system and inlet valves therefor Greg A. Calderone, Shawn C. Metz 2020-11-03
D885000 Hose valve assembly for vacuum cleaning device Shawn C. Metz, Greg A. Calderone 2020-05-19