JE

John W. Ells

BP British Petroleum: 2 patents #2 of 67Top 3%
Overall (1989): #23,989 of 140,708Top 20%
2
Patents 1989

Issued Patents 1989

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4811652 Pressure device 1989-03-14
4795132 Seals 1989-01-03