AV

Alfred Valantin

CF Charbonnages De France: 1 patents #24 of 57Top 45%
📍 Clermont, FR: #26 of 111 inventorsTop 25%
Overall (All Time): #1,684,876 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4345854 Apparatus for laying underwater pipelines — 1982-08-24
4255068 Method and a device for undersea drilling — 1981-03-10
4232911 Carriage with articulated track — 1980-11-11