GY

Grace A. Youmans

📍 Des Moines, IA: #347 of 657 inventorsTop 55%
🗺 Iowa: #8,735 of 15,303 inventorsTop 60%
Overall (All Time): #4,050,398 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4379217 Method and means of melting frozen material on terrain or water surfaces — 1983-04-05