KD

Karl Duren

MA Mannesmann Ag: 2 patents #274 of 1,341Top 25%
📍 Duisburg, DE: #267 of 870 inventorsTop 35%
Overall (All Time): #2,350,790 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4630351 Making clad seamless pipes Eckhard Kranz 1986-12-23
4292492 Seam welding of pipes — 1981-09-29