SD

Siegfried Dzwonnek

AN Agfa-Gevaert Nv: 2 patents #634 of 1,819Top 35%
📍 Pulheim, DE: #109 of 276 inventorsTop 40%
Overall (All Time): #2,200,007 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6534254 Color photographic print material Gunter Helling, Ralf Weimann 2003-03-18
6015654 Color photographic recording material Jorg Hagemann 2000-01-18