EG

Etienne Grappein

SP Speedinnov: 2 patents #4 of 37Top 15%
📍 Uffholtz, FR: #1 of 4 inventorsTop 25%
Overall (All Time): #1,924,725 of 4,157,543Top 50%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
10870438 Power car for high-speed train with internal overpressure Paul Preiss, Pierre Debost, Marion Faverger 2020-12-22
10864925 Power car for high-speed train Paul Preiss, Pierre Debost, Marion Faverger 2020-12-15