DH

Detlef Hahn

BH Baker Hughes Holdings: 1 patents #81 of 276Top 30%
📍 Grafenau, DE: #4 of 11 inventorsTop 40%
Overall (2003): #237,531 of 273,478Top 90%
1
Patents 2003

Issued Patents 2003

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6626253 Oscillating shear valve for mud pulse telemetry Volker Peters, Cedric Rouatbi 2003-09-30