DS

Duane Sparks

📍 Annandale, MN: #1 of 2 inventorsTop 50%
🗺 Minnesota: #695 of 2,841 inventorsTop 25%
Overall (1994): #44,221 of 165,921Top 30%
1
Patents 1994

Issued Patents 1994

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