DS

Duane Sparks

📍 Annandale, MN: #16 of 33 inventorsTop 50%
🗺 Minnesota: #32,449 of 52,454 inventorsTop 65%
Overall (All Time): #3,812,440 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
D352990 Combined funnel for a used oil filter and container for gathering residual oil Alan Violet, David C. Brenner 1994-11-29