RS

Ralph D. Sprung

📍 Covina, CA: #137 of 287 inventorsTop 50%
🗺 California: #247,236 of 386,348 inventorsTop 65%
Overall (All Time): #3,881,651 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5035037 Adjustable expanding rubber tire roller for paper scoring machinery — 1991-07-30