DN

Douglas D. J. Nightingale

IC ICI: 4 patents #346 of 2,189Top 20%
Overall (All Time): #1,310,203 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
4285498 Control valves 1981-08-25
4268472 Valve 1981-05-19
4198368 Valve 1980-04-15
4183500 Control valves 1980-01-15