Assignee
Inventors
- Lars-Peter Lindfors (5 patents)
- Kalevi Heinola (2 patents)
- Kari Kulmala (5 patents)
- Hannele Hakanp{umlaut over (aa)}-Laitinen (1 patents)
- Lea Rintala (3 patents)
- Lea Parkkinen (1 patents)
- Vesa-Matti Lehtinen (3 patents)
US Patent 6369281 · Granted Apr 9, 2002