DG

Darin Grassmann

OL Oil States Energy Services, L.L.C.: 1 patents #1 of 6Top 20%
📍 Piedmont, OK: #1 of 4 inventorsTop 25%
🗺 Oklahoma: #263 of 1,012 inventorsTop 30%
Overall (2019): #497,396 of 560,194Top 90%
1
Patents 2019

Issued Patents 2019

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
10309564 Extendable spool Bob McGuire, Danny Lee Artherholt, Mickey Claxton, Blake Mullins 2019-06-04