Assignee
Inventors
- Michio Tsuchiya (4 patents)
- Masaaki Terazawa (5 patents)
- Koji Takeyama (4 patents)
- Yutaka Nonomura (45 patents)
- Kazuhiro Kuwabara (20 patents)
- Shuji Otsuka (63 patents)
- Kouichi Mino (7 patents)
- Koji Matsumura (7 patents)
US Patent 4970529 · Granted Nov 13, 1990