DT

Douglas M. Thornton

RV Ross Operating Valve: 2 patents #15 of 51Top 30%
Overall (All Time): #2,354,900 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4542767 Monitor for double safety valves Logan H. Mathis 1985-09-24
4349176 Electrical terminal construction — 1982-09-14