RD

Roger Degrave

📍 Douai, FR: #26 of 52 inventorsTop 50%
Overall (All Time): #4,109,653 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4197160 Process by means of which moulded coke can be obtained from non-cokable coals Maurice Marchasson 1980-04-08