DD

David Duckworth

BA Bp Corporation North America: 2 patents #1 of 39Top 3%
📍 Blackburn, CA: #1 of 1 inventorsTop 100%
Overall (2017): #160,694 of 506,227Top 35%
2
Patents 2017

Issued Patents 2017

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
9725967 Centralizers for centralizing well casings Scott Jewett 2017-08-08
9626091 Centralizers for centralizing well casings Scott Jewett 2017-04-18