DD

David K. Duckworth

📍 Daventry, GB: #18 of 29 inventorsTop 65%
Overall (All Time): #3,976,835 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4674463 Internal combustion engines Frederick W. Morley 1987-06-23