JH

Johan A. de Hek

📍 Oosterbeek, NL: #8 of 67 inventorsTop 15%
Overall (All Time): #1,681,295 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4478688 Process of manufacturing screen material 1984-10-23
4436591 Process of electroforming screen material 1984-03-13
4397715 Process of manufacturing screen material Anand Mohan 1983-08-09