EK

Esa Karru

OA Oy Tampella Ab: 2 patents #29 of 124Top 25%
📍 Tampere, FI: #805 of 2,125 inventorsTop 40%
Overall (All Time): #2,367,460 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4355691 Hydraulic drilling apparatus Pekka Salmi, Hannu Paasonen, Aimo Helin 1982-10-26
4343227 Hydraulic percussion apparatus Pekka Salmi, Hannu Paasonen 1982-08-10