RH

Roy L. Hall

📍 Hoffman Estates, IL: #317 of 707 inventorsTop 45%
🗺 Illinois: #34,584 of 84,256 inventorsTop 45%
Overall (All Time): #2,365,752 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4319560 Solar heating system — 1982-03-16
4277990 Ratchet wrench — 1981-07-14