Assignee
Inventors
- Jorma Elonen (10 patents)
- Harry Erlund (2 patents)
- Kaj Henricson (64 patents)
- Pasi Immonen (5 patents)
- Raimo Kohonen (14 patents)
- Heikki Manninen (12 patents)
- Unknown
- Raimo Pitkanen (5 patents)
- Pentti Vikio (20 patents)
US Patent 5240621 · Granted Aug 31, 1993