JG

Jan A. Groopthoff

📍 Aerdenhout, NL: #7 of 11 inventorsTop 65%
Overall (All Time): #3,796,379 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5307999 Metallic coolant for a metallurgical bath, method of manufacture — 1994-05-03