Matti Leppala

OA Oy Tampella Ab: 1 patents #52 of 124Top 45%

📍 Pirkkala, FI: #46 of 126 inventorsTop 40%

Overall (All Time): #2,355,704 of 4,157,543Top 60%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4558630	Hydraulic mechanism with elastically backed piston parts and cooperating valve means	—	1985-12-17
4438984	Drill steel guiding and centralizing mechanism	—	1984-03-27