Assignee
Inventors
- Tsuneji Suzuki (24 patents)
- Kunio Sannohe (3 patents)
- Toshihiko Ito (1 patents)
- Masahiko Maruyama (12 patents)
- Joji Kamiya (10 patents)
- Makoto Hirayama (3 patents)
- Takafumi Kitano (7 patents)
- Akira Awaya (25 patents)
US Patent 4824952 · Granted Apr 25, 1989