RS

Robert B. Sprague

UN Unknown: 6 patents #2,010 of 83,584Top 3%
📍 Long Beach, CA: #1,148 of 2,153 inventorsTop 55%
🗺 California: #247,236 of 386,348 inventorsTop 65%
Overall (All Time): #4,054,018 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4391712 Reverse-osmosis water purifier apparatus and method Truman V. Tyler 1983-07-05