PD

Philippe de Donato

📍 Varangéville, FR: #1 of 3 inventorsTop 35%
Overall (All Time): #3,501,749 of 4,157,543Top 85%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6515738 Method of determining the authenticity and the geographical origin of gemstones such as beryls Odile Barres, Bruno Sabot, Alain Cheilletz 2003-02-04