RS

Roger C. Sparks

📍 Ellensburg, WA: #14 of 57 inventorsTop 25%
🗺 Washington: #35,300 of 76,902 inventorsTop 50%
Overall (All Time): #2,348,624 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4595198 Centrifugal brake for exercise machine — 1986-06-17
4483532 Exercise machine — 1984-11-20