JE

John W. Ells

BP British Petroleum: 3 patents #46 of 360Top 15%
Overall (All Time): #1,669,328 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4811652 Pressure device 1989-03-14
4795132 Seals 1989-01-03
4582091 Leak sealing method 1986-04-15