WG

Walter C. Graybeal

📍 Hollywood, FL: #192 of 725 inventorsTop 30%
🗺 Florida: #22,299 of 67,251 inventorsTop 35%
Overall (All Time): #2,317,875 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5033310 Manhole cover inflow test device — 1991-07-23
4512492 Manhole closure with a single liquid impervious, two-way gas pressure relief valve — 1985-04-23