DF

Douglas Freeland

📍 San Diego, CA: #88 of 458 inventorsTop 20%
🗺 California: #2,144 of 10,592 inventorsTop 25%
Overall (1989): #119,671 of 140,708Top 90%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4881472 Ignition system and control means for pelletized-fuel furnace Thomas Stromberger, Dwain Freeland 1989-11-21