BD

Bernd Helmut Dobberstein

VI Varco I/P: 2 patents #61 of 168Top 40%
Overall (All Time): #2,177,818 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6931748 Riser and tubular inspection systems Clive Lam, Manfred Worms, Helmut Knapwost, Reinhold Kammann, Matthias Janssen 2005-08-23
6862099 Tubular ovality testing Clive Lam, Manfred Worms, Helmut Knapwost 2005-03-01