DS

David R. Shoptaw

HY Hydro-Craft: 3 patents #2 of 5Top 40%
Overall (All Time): #1,669,310 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4980825 Servo valve analyzing system and method Terence S. Tootell, Keith Wilson 1990-12-25
4887469 High accuracy turbine flowmeter with optical sensor 1989-12-19
4885943 Electronic flowmeter system and method Terence S. Tootell, Keith Wilson 1989-12-12