RB

Rick E. Barrett

TW The Charles Machine Works: 1 patents #13 of 42Top 35%
Overall (2021): #290,234 of 548,734Top 55%
1
Patents 2021

Issued Patents 2021

Patent #TitleCo-InventorsDate
11041342 Drill string rotation brake Max A. Metcalf, Philip J. Wosmek, Harry Bendure 2021-06-22