PL

Pertti Lehto

TO T-Drill Oy: 4 patents #1 of 13Top 8%
Overall (All Time): #1,253,174 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
7464472 Pipe cutting apparatus Timo Kangas, Matti Lehtimaki, Esko Hakola 2008-12-16
6884013 Mounting and dismounting mechanism for a straightening or calibrating roller rotatable about a spindle and provided with a circular groove Risto Kiviranta 2005-04-26
6427508 Automated collar-forming drill mechanism Kari Haavisto, Vesa Ropponen, Timo Saari 2002-08-06
6152396 Variable-force discharge mechanism for materials loaded on a reel Tero Rapila 2000-11-28