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Sijbrand Spannenburg

📍 Schoorl, NL: #11 of 22 inventorsTop 50%
Overall (All Time): #3,813,828 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5374976 Support provided with a machine detectable copying security element — 1994-12-20