FJ

Frederick J. Keller, Jr.

📍 Orr, MN: #3 of 7 inventorsTop 45%
🗺 Minnesota: #156 of 1,035 inventorsTop 20%
Overall (1982): #65,279 of 81,411Top 85%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
D263417 Self-contained solid fuel boiler system Walter G. Horton 1982-03-16