Assignee
Inventors
- Torbjorn R. Olsson (1 patents)
- Bjorn T. Kassman (4 patents)
- Karl-Gustaf Olsson (4 patents)
- Stig C. Ernolf (5 patents)
- Per Nilsson (10 patents)
- Rolf I. B. Kjellsson (1 patents)
- Lars H. Widoff (1 patents)
US Patent 4947288 · Granted Aug 7, 1990