DL

David Lange

DI Dresser Industries: 1 patents #7 of 31Top 25%
📍 La Ronge, CA: #2 of 18 inventorsTop 15%
Overall (1997): #162,789 of 185,788Top 90%
1
Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5655493 Exhaust valve for internal combustion engine Bernard F. Enright 1997-08-12