DD

David J. Diel

TW The Charles Machine Works: 2 patents #90 of 211Top 45%
📍 Perry, OK: #45 of 85 inventorsTop 55%
🗺 Oklahoma: #4,502 of 12,736 inventorsTop 40%
Overall (All Time): #1,732,822 of 4,157,543Top 45%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
D1089341 Microtrencher blade Michael C. Walgren, Brant Douglas Kukuk, Todd J. Streck 2025-08-19
D1040197 Microtrencher blade Michael C. Walgren, Brant Douglas Kukuk, Todd J. Streck 2024-08-27