WS

William Howden Simpson

📍 Warwick, IL: #4 of 4 inventorsTop 100%
Overall (All Time): #2,323,930 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
10413443 Thermal device Stephen McCallum Tocker 2019-09-17
4927297 Leak prevention structure, method and apparatus 1990-05-22