FS

Frederic J. Singer

📍 Santa Ana, CA: #797 of 1,362 inventorsTop 60%
🗺 California: #247,236 of 386,348 inventorsTop 65%
Overall (All Time): #4,092,251 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4275757 Manhole structure and method of making same — 1981-06-30