CS

Charles W. Spengler

📍 Hoffman Estates, IL: #14 of 41 inventorsTop 35%
🗺 Illinois: #802 of 3,813 inventorsTop 25%
Overall (1989): #125,499 of 140,708Top 90%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4804392 Clean air facility — 1989-02-14