JF

Janos Fenyvesi

📍 Budapest, HU: #1,200 of 4,609 inventorsTop 30%
Overall (All Time): #2,331,946 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4848455 Flexible drill rod feeding apparatus for quick rotary deep drilling — 1989-07-18
4735270 Drillstem motion apparatus, especially for the execution of continuously operational deepdrilling — 1988-04-05