CS

Charles W. Spengler

📍 Hoffman Estates, IL: #11 of 49 inventorsTop 25%
🗺 Illinois: #1,559 of 5,780 inventorsTop 30%
Overall (2003): #247,534 of 273,478Top 95%
1
Patents 2003

Issued Patents 2003

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6602128 Clean air room with a blower including a HEPA filter and ducts — 2003-08-05