DV

Dirk J. Vermeulen

📍 Rosebank, ZA: #9 of 39 inventorsTop 25%
Overall (All Time): #4,110,447 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4199252 Photographic enlarging exposure meters — 1980-04-22