HS

Harold W. Irwin, Sr.

📍 Streamwood, IL: #4 of 19 inventorsTop 25%
🗺 Illinois: #1,480 of 5,663 inventorsTop 30%
Overall (2004): #214,244 of 270,089Top 80%
1
Patents 2004

Issued Patents 2004

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6689989 Heater for electric blanket Kin Sang Cheng, John H. Crawford 2004-02-10