Unto Mattero

TO Tamrock Oy: 1 patents #4 of 12Top 35%

📍 Helsinki, FI: #20 of 78 inventorsTop 30%

Overall (1994): #55,420 of 165,921Top 35%

Patents 1994

Issued Patents 1994

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
5348106	Method of drilling a hole in a rock	—	1994-09-20