DD

David Drennen

General Motors: 2 patents #30 of 495Top 7%
📍 Centerville, OH: #6 of 55 inventorsTop 15%
🗺 Ohio: #519 of 4,576 inventorsTop 15%
Overall (1997): #43,206 of 185,788Top 25%
2
Patents 1997

Issued Patents 1997

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5667283 Variable screw-driven system Ryan Lovell Wright 1997-09-16
5667284 Manually backdrivable ball screw assisted braking system Ryan Lovell Wright 1997-09-16