WH

Walter T. Hartwell

📍 McLeansboro, IL: #3 of 29 inventorsTop 15%
🗺 Illinois: #802 of 3,813 inventorsTop 25%
Overall (1989): #45,866 of 140,708Top 35%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4797926 Digital speech vocoder Edward C. Bronson, Willem Baastian Kleijn, Dimitrios P. Prezas 1989-01-10